13 Best Mummy Sleeping Bags, Compared

We analyzed 13 mummy sleeping bags using only published specifications. This guide helps you select the right insulation and weight for your specific camping conditions.

By GearRank Editorial Team October 30, 2026 6 min read

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13 Best Mummy Sleeping Bags, Compared

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Choosing the best mummy sleeping bags requires matching your gear to specific conditions. We compared 13 options ranked by their published specifications. The TETON Sports Tracker 5 Degree Double Mummy leads this list. Its 8.2-pound weight and 63-inch width make it ideal for couples camping in cold weather who prioritize shared warmth over packability. Each pick below is based strictly on data points like insulation, fill power, and dimensions. This guide helps you decide which bag fits your weight, temperature, and space needs.

Match Temperature Rating to Conditions

Select your bag based on the lowest expected temperature. The TETON Sports Tracker 5 Degree Double Mummy offers 63-inch width for couples, while the Sierra Designs Cloud Zip 20F provides 800 fill power down at 2.08 pounds. Check the insulation material and weight class to balance warmth against packability for your specific trip.

#	Product	Best for
1	TETON Sports Tracker 5 Degree Double Mummy Best overall	couples camping in cold weather
2	Kelty Cosmic 20 Down Mummy Bag Also great	Cool-weather backpackers valuing sustainable materials
3	QEZER 600FP Down Mummy Sleeping Bag Best budget	budget backpackers seeking durable down
4	Kelty Cosmic Synthetic 0°F Also great	Cold weather camping with synthetic insulation
5	Naturehike SP550 650FP Down Sleeping Bag Also great	Cold weather backpackers needing reliable down
6	Browning Denali -30°F Mummy Bag Also great	extreme cold weather camping and hunting
7	Sierra Designs Cloud Zip 20F Best premium	backpackers needing lightweight warmth
8	BUERTS 620FP Down Mummy Sleeping Bag Best black	cool weather backpacking with ethical down
9	ALPS Mountaineering Genesis 0°F Synthetic Mummy Also great	cold weather camping with synthetic insulation
10	Big Agnes Torchlight EXP 0°F Also great	backpackers needing expandable fit
11	Mountaintop 20F 650FP Duck Down Bag Also great	three-season backpacking and weight-conscious camping
12	Marmot Mad River 0°F Mummy Bag Also great	cold-weather backpacking trips
13	TETON Sports Altos-S 0°F Synthetic Mummy Bag Also great	Cold weather camping with synthetic fill

The best fit for you

You want the most compact model on the list – Naturehike SP550 650FP Down Sleeping Bag – It packs to 7.09 inches wide and weighs just 2.03 pounds.
You need a double-width bag for two people – TETON Sports Tracker 5 Degree Double Mummy – It offers 63 inches of width and fits two sleepers comfortably.
You prefer the lightest weight for backpacking – QEZER 600FP Down Mummy Sleeping Bag – It weighs only 1.76 pounds while providing 600FP down insulation.
You need extreme cold protection for winter camping – Browning Denali -30°F Mummy Bag – It provides a -30°F rating for serious cold weather conditions.
You want the highest fill power down insulation – Sierra Designs Cloud Zip 20F – It uses 800 fill power down for superior warmth-to-weight ratio.

1Best overall

TETON Sports Tracker 5 Degree Double Mummy

Best for: couples camping in cold weather

Shape: Mummy
Temperature Rating: 5 Degree
Insulation Type: microfiber
Capacity: Double
Weight: 8.2 pounds
Intended Use: Hiking, Backpacking

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The Teton Sports Tracker is a 5-degree mummy sleeping bag designed for double occupancy. It weighs 8.2 pounds and uses microfiber insulation to provide warmth in cold conditions. The 87-inch length and 63-inch width accommodate two sleepers comfortably. This bag includes a compression sack for easy transport and hang loops for storage. It suits backpackers and campers who prioritize shared warmth and durable construction over ultralight weight.

Pros

Double capacity for two sleepers
5-degree temperature rating for cold weather
87-inch length for taller users
Includes compression sack for packing
Microfiber insulation for loft and warmth

Cons

8.2-pound weight is heavy for backpacking
63-inch width limits solo comfort
5-degree rating is warmer than -30-degree options

Good fit if

You need a sleeping bag for two people
You camp in temperatures near 5 degrees
You prefer microfiber insulation over down

Skip if

You prioritize ultralight gear under 3 pounds
You sleep alone and need a standard width
You require extreme cold protection below 0 degrees

Verdict: TETON Sports Tracker 5 Degree Double Mummy is a heavy, double-width bag best for couples camping in cold weather who value shared warmth over packability.

2Also great

Kelty Cosmic 20 Down Mummy Bag

Best for: Cool-weather backpackers valuing sustainable materials

Shape: Mummy
Temperature Rating: 21°
Insulation Type: down
Fill Power: 550 FP
Shell Material: recycled nylon and polyester taffeta
Lining Material: recycled nylon and polyester taffeta

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The Kelty Cosmic 20 is a mummy sleeping bag designed for backpacking and camping. It uses 550 fill power down insulation for warmth and compressibility. The shell and liner are made from recycled nylon and polyester taffeta. It features an ISO limit rating of 21 degrees. The regular size weighs about 2 lbs. 6 oz. and compresses to 13 x 7 inches. This bag suits campers who value sustainable materials and ethical sourcing in their gear.

Pros

550 fill power down insulation provides reliable warmth.
Recycled nylon and polyester taffeta shell and liner.
ISO limit rating of 21 degrees for cool nights.
Ethically sourced down traceable via RDS certification.
Compresses to a compact 13 x 7 inch stuff sack size.

Cons

550 fill power is lower than the 600 to 650 fill power found in many other mummy bags on this list.
ISO limit rating of 21 degrees is warmer than the 0 to 5 degree ratings of several competitors, limiting use in colder conditions.

Good fit if

You are backpacking in temperatures around 20 degrees Fahrenheit.
You prefer gear made with recycled fabrics and ethical down.
You want a lightweight bag that compresses small for your pack.

Skip if

You need a bag rated for extreme cold below 0 degrees.
You require high-performance 650 fill power down for maximum warmth-to-weight ratio.
You are looking for a bag with a synthetic insulation alternative.

Verdict: The Kelty Cosmic 20 Down Mummy Bag is a solid choice for cool-weather backpackers who prioritize sustainability. Its 550 fill power down and recycled fabrics make it a practical option for campers who stay above 20 degrees.

3Best budget

QEZER 600FP Down Mummy Sleeping Bag

Best for: budget backpackers seeking durable down

Shape: Mummy
Temperature Rating: 18°F
Insulation Type: Duck down
Weight: 3.2 lbs.
Fill Power: 600+ FP
Shell Material: 400T tear-resistant nylon

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This QEZER mummy sleeping bag uses 600+ fill power duck down for warmth in cold conditions. It weighs 3.2 lbs and compresses to a compact 13.78 x 7.48 inches. The 400T nylon shell resists tears and prevents down leakage. You get a 18°F temperature rating and a wide foot box for comfort. This bag suits backpackers who need reliable insulation without excessive bulk.

Pros

600+ fill power duck down insulation
400T tear-resistant nylon shell and lining
3.2 lb lightweight construction
Wide trapezoidal foot box for comfort
Compresses to 13.78 x 7.48 inches

Cons

600 fill power is lower than the 620-650 FP options on this list
3.2 lb weight is heavier than the ultralight 0°F bags in the guide

Good fit if

You want a durable nylon shell that resists tearing
You need a bag with a wide foot box for comfort
You prefer duck down insulation over goose down

Skip if

You require the lightest possible pack weight
You need the highest fill power available

Verdict: The QEZER 600FP Down Mummy Bag offers solid warmth and durability for budget-conscious backpackers who prioritize shell strength over minimal weight.

4Also great

Kelty Cosmic Synthetic 0°F

Best for: Cold weather camping with synthetic insulation

Shape: Mummy
Temperature Rating: 0°F
Insulation Type: Synthetic
Weight: 4 lb. 12 oz.
Intended Use: Backpacking
Dimensions: 68 × 30 × 3 inches

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The Kelty Cosmic Synthetic 0°F Sleeping Bag uses 61.2 oz of recycled CirroLoft ECO insulation to handle cold nights. It features a roomy footbox and a contoured hood to retain heat. The dual locking sliders allow for easy ventilation without zipper issues. Weighing 4 lb. 12 oz., this mummy bag offers a balance of warmth and packability for backpackers who prefer synthetic fill.

Pros

0°F temperature rating for cold weather
61.2 oz of synthetic CirroLoft ECO insulation
Dual locking sliders for adjustable ventilation
Roomy footbox for comfort

Cons

Heavier at 4 lb. 12 oz. compared to lighter down options
Larger stuffed size of 11.5 x 19 inches reduces pack efficiency

Good fit if

You need reliable warmth in freezing conditions
You prefer synthetic insulation that performs when damp
You want a roomier fit in the footbox

Skip if

You prioritize ultralight gear under 3 pounds
You need maximum compression for tight pack space
You require down insulation for better warmth-to-weight ratio

Verdict: Kelty Cosmic 0°F Synthetic Mummy suits hikers who value synthetic durability and a comfortable footbox over minimal weight. It is a solid choice for cold-weather camping where moisture resistance matters more than pack size.

5Also great

Naturehike SP550 650FP Down Sleeping Bag

Best for: Cold weather backpackers needing reliable down

Shape: Mummy
Temperature Rating: 18°F
Insulation Type: Duck down
Weight: 2.03 pounds
Fill Power: 650 FP
Intended Use: Hiking, Backpacking

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This Naturehike mummy sleeping bag uses 650 fill power duck down for cold weather backpacking. It carries an 18°F limit rating and weighs 2.03 pounds in the short size. The design includes a wind-blocking strip and a U-neck collar to reduce heat loss. You get a 6:4 upper-to-lower fill ratio to keep warmth on your torso. It is a practical option for hikers who need reliable down insulation in chilly conditions.

Pros

650 fill power duck down insulation
18°F limit temperature rating
Wind-blocking strip and U-neck collar
Weighs 2.03 pounds in short size
RDS certified traceable down

Cons

18°F limit is warmer than the 0°F ratings of several competitors
2.03 pound weight is heavier than ultralight options on the list

Good fit if

You need a reliable down bag for cold weather camping
You prefer wind-blocking features to seal out drafts
You want RDS certified down for ethical sourcing

Skip if

You require a 0°F rating for extreme cold
You prioritize the lightest possible pack weight
You need a bag rated below 18°F

Verdict: Naturehike 0°F 650FP Mummy Bag offers solid warmth and wind protection for backpackers who do not need extreme cold ratings. It fits hikers who value ethical down certification and reliable thermal performance over minimal weight.

6Also great

Browning Denali -30°F Mummy Bag

Best for: extreme cold weather camping and hunting

Shape: Mummy
Temperature Rating: -30°F
Insulation Type: Synthetic
Weight: 9 lbs. 9 oz.
Shell Material: 210T nylon diamond ripstop
Lining Material: 210T polyester

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The Browning Denali is a mummy sleeping bag rated for -30°F. It uses TechLoft Silver synthetic insulation and a 210T nylon diamond ripstop shell. The bag weighs 9 lbs. 9 oz. and measures 86 by 38 inches. This substantial build traps heat effectively in subzero conditions. It suits you if you need reliable warmth for late-season hunting or alpine expeditions where extreme cold is a factor.

Pros

Rated to -30°F for extreme cold
210T nylon diamond ripstop shell resists tears
TechLoft Silver synthetic insulation maintains loft
Integrated chest baffle prevents heat loss

Cons

Weighs 9 lbs. 9 oz., which is heavy for backpacking
Packed size is 19 by 14 inches, taking up significant space
Synthetic fill is bulkier than down alternatives

Good fit if

You require a -30°F rating for extreme cold
You prioritize shell durability over weight savings
You are hunting or camping in subzero conditions

Skip if

You need ultralight gear for long-distance hiking
You prefer down insulation for better packability
You want a bag under 5 lbs

Verdict: Browning Denali -30°F Mummy Bag delivers serious warmth for cold-weather adventures. It fits you if you value extreme temperature ratings and durable construction over lightweight portability.

7Best premium

Sierra Designs Cloud Zip 20F

Best for: backpackers needing lightweight warmth

Shape: Mummy
Temperature Rating: 17°F
Insulation Type: DriDown
Weight: 2.08 pounds
Fill Power: 800 Fill Power
Shell Material: 15D nylon ripstop

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The Sierra Designs Cloud Zip is an ultralight mummy sleeping bag rated for 20°F conditions. It uses 800 fill power DriDown insulation for high loft and warmth. The bag weighs 2.08 pounds and features a 15D nylon ripstop shell. It includes a full zip with anti-snag design and a self-sealing foot vent for temperature control. This bag suits backpackers seeking lightweight comfort in cold weather.

Pros

800 fill power DriDown insulation for superior warmth-to-weight ratio
Ultralight trail weight of 2.08 pounds
Self-sealing foot vent for easy temperature regulation
Anti-snag zipper and draft dodger collar
15D nylon ripstop shell material

Cons

20°F temperature rating is warmer than several other bags on the list
2.08 pounds is heavier than ultralight options like the Big Agnes Torchlight
Limited to mummy shape which restricts movement

Good fit if

You want high-quality down insulation in a lightweight package
You need a bag with active venting options for temperature control
You are backpacking in three-season conditions

Skip if

You require a sleeping bag rated for sub-zero temperatures
You prefer a rectangular shape for more room to move
You are looking for the absolute lightest bag available

Verdict: The Sierra Designs Cloud Zip 20°F Down Bag offers premium 800 fill power down in a manageable 2.08-pound package. It fits backpackers who prioritize warmth and comfort features like foot vents over absolute minimum weight.

8Best black

BUERTS 620FP Down Mummy Sleeping Bag

Best for: cool weather backpacking with ethical down

Shape: Mummy
Temperature Rating: 17°F
Insulation Type: Down
Weight: 1.72 lbs
Fill Power: 620 FP
Shell Material: 400T 20D nylon

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The BUERTS Mummy Sleeping Bag uses 620 fill power down to provide warmth in cold conditions. It weighs 1.72 lbs and compresses to 13.8 by 7 inches for easy packing. The 400T 20D nylon shell offers water repellency. You get a 32.3 inch width and 85.8 inch length for comfort. This bag suits backpackers who need reliable insulation without excessive bulk.

Pros

620 fill power RDS-certified down insulation
Lightweight 1.72 lb construction
Compact 13.8 by 7 inch packed size
Water-repellent 400T 20D nylon shell

Cons

620 fill power is lower than the 650 fill power found in other bags on this list
1.72 lb weight is heavier than the ultralight options available in the guide
20°F temperature rating is warmer than the 0°F and -30°F bags included here

Good fit if

You prioritize ethical down sourcing over maximum loft
You need a black color option for low visibility
You want a water-repellent shell for damp conditions

Skip if

You require ultralight performance under 1.5 lbs
You need extreme cold protection below 0°F
You prefer higher fill power for better compression

Verdict: The BUERTS 620FP Down Mummy Bag fits hikers who value ethical sourcing and water resistance over the absolute lightest weight or coldest ratings. It serves as a practical mid-range option for cool weather camping.

9Also great

ALPS Mountaineering Genesis 0°F Synthetic Mummy

Best for: cold weather camping with synthetic insulation

Shape: Mummy
Temperature Rating: 0°F
Insulation Type: synthetic
Weight: 5 lbs. 1 oz.
Shell Material: 100% recycled polyester ripstop
Intended Use: Mountaineering

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The ALPS Mountaineering Genesis is a 0°F mummy sleeping bag designed for cold weather camping. It uses Techloft Micro synthetic insulation inside a 100% recycled polyester ripstop shell. The bag weighs 5 lbs. 1 oz. and measures 80 inches long by 32 inches wide. It features a two-way full-length zipper and an additional half-length side zipper for venting. This synthetic fill retains warmth when wet, making it a reliable option for damp conditions.

Pros

0°F temperature rating for cold weather use
Two-way full-length separating zipper with footbox extension
Additional half-length side zipper for extra venting
Made from 100% recycled polyester ripstop shell

Cons

Heavier at 5 lbs. 1 oz. compared to ultralight down options
Standard width of 32 inches limits roominess
Stuffed size of 17 x 10.5 inches is bulkier than down equivalents

Good fit if

You need synthetic insulation that performs well in damp conditions
You want multiple zipper options for temperature regulation
You prefer gear made from recycled materials

Skip if

You prioritize ultralight packing for long-distance backpacking
You need a bag that compresses to a very small volume
You require a wider fit for more comfort

Verdict: ALPS Mountaineering Genesis 0°F Synthetic Mummy Bag offers durable synthetic warmth and versatile venting for campers who value moisture resistance over minimal weight. It suits those willing to carry extra ounces for reliable performance in cold, damp environments.

10Also great

Big Agnes Torchlight EXP 0°F

Best for: backpackers needing expandable fit

Shape: Mummy
Temperature Rating: 0°F
Insulation Type: DownTek down
Weight: 3.63 lbs
Fill Power: 650 FP
Shell Material: Recycled 20D polyester ripstop

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The Big Agnes Torchlight EXP is a 0-degree mummy sleeping bag designed for ultralight backpacking. It features 650-fill DownTek insulation and weighs 3.63 lbs. The expandable side panels add up to 10 inches of girth for customizable fit. This bag balances warmth with minimal weight for cold weather trips. It suits hikers who need reliable performance in freezing conditions without carrying excessive bulk.

Pros

Expandable side panels add up to 10 inches of total girth
650-fill DownTek insulation maintains warmth when damp
Ultralight weight of 3.63 lbs for backpacking
Padlok design attaches to your sleeping pad

Cons

Heavier at 3.63 lbs compared to lighter ultralight options
650 fill power is lower than 600+ fill options on this list

Good fit if

You want customizable fit with expandable side panels
You need a 0-degree rating for cold weather
You prioritize ultralight weight for backpacking

Skip if

You prefer higher fill power for maximum warmth-to-weight ratio
You need a bag lighter than 3.63 lbs
You require a higher temperature rating for mild weather

Verdict: Big Agnes Torchlight EXP 0°F offers a unique expandable fit system for those who value movement in cold conditions. It is ideal for backpackers who need a reliable 0-degree bag with moderate weight.

11Also great

Mountaintop 20F 650FP Duck Down Bag

Best for: three-season backpacking and weight-conscious camping

Shape: Mummy
Temperature Rating: 20°F
Insulation Type: Duck down
Weight: 2.46 lbs
Fill Power: 650
Shell Material: 20D 420T ripstop nylon

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The Mountaintop 20°F mummy sleeping bag uses 650 fill power duck down for efficient warmth. Its 20D ripstop nylon shell keeps weight low at 2.46 lbs. The mummy shape reduces dead air space, improving thermal efficiency. You get a 20°F lower limit rating for cool nights. The 33-inch width offers room for movement. This bag suits backpackers who prioritize weight savings without sacrificing too much warmth.

Pros

650 fill power duck down insulation
Ultralight 2.46 lb weight
20D ripstop nylon shell
20°F lower temperature limit

Cons

20°F rating is warmer than the 0°F bags on this list
2.46 lb weight is heavier than the 0°F ultralight options
33-inch width is narrower than standard rectangular bags

Good fit if

You need a lightweight bag for spring or fall trips
You prefer down insulation for better compressibility
You want a mummy shape to retain heat efficiently

Skip if

You require a 0°F rating for winter camping
You need a bag rated below 20°F
You prefer synthetic insulation for wet conditions

Verdict: Mountaintop 20°F Mummy Down Sleeping Bag fits backpackers who need ultralight gear for mild weather. It offers a solid balance of weight and warmth for three-season use.

12Also great

Marmot Mad River 0°F Mummy Bag

Best for: cold-weather backpacking trips

Shape: Mummy
Temperature Rating: 0°F
Insulation Type: duck down
Weight: 4.2 pounds
Shell Material: 100% recycled polyester
Lining Material: 100% recycled polyester

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The Marmot Mad River is a 0°F mummy sleeping bag designed for cold-weather backpacking. It uses RDS-certified duck down insulation for reliable warmth. The bag weighs 4.2 pounds and features a full-length left-side zip for ventilation and easy access. You will appreciate the quick-dry down treatment and 100% recycled shell and lining fabrics. This gear suits hikers who need a durable, gender-free bag for sub-freezing conditions.

Pros

0°F temperature rating for cold weather
RDS-certified duck down insulation
Full-length left-side zip for ventilation
Quick-dry down treatment
100% recycled shell and lining fabrics

Cons

Heavier at 4.2 pounds compared to ultralight options like the Big Agnes Torchlight EXP
Standard width of 65 inches may feel snug for broader shoulders
Limited size options with only Standard and Short available

Good fit if

You need a reliable 0°F rating for winter camping
You prefer recycled materials in your gear

Skip if

You prioritize ultralight gear under 3 pounds
You require a long size option for taller frames

Verdict: The Marmot Mad River 0°F Mummy Bag fits cold-weather backpackers who value durable, recycled materials and reliable down insulation over minimal weight.

13Also great

TETON Sports Altos-S 0°F Synthetic Mummy Bag

Best for: Cold weather camping with synthetic fill

Shape: Mummy
Temperature Rating: 0 Degree
Weight: 3.5 pounds
Intended Use: Hiking, Backpacking
Insulation Material: Synthetic
Target Audience: Adults

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The TETON Sports Altos-S is a 0°F rated mummy sleeping bag designed for adults who need reliable warmth in cold conditions. Weighing 3.5 pounds, it offers a lightweight profile suitable for hiking and backpacking. The synthetic insulation provides water-resistant warmth, while the roomy shoulder and leg areas improve comfort compared to standard mummy shapes. It includes a compression sack for easy storage.

Pros

0°F temperature rating for cold weather camping
Lightweight 3.5-pound build for backpacking
Synthetic insulation offers water-resistant warmth
Roomy shoulder and built-out footbox for added comfort

Cons

Heavier at 3.5 pounds compared to ultralight down options on this list
Synthetic insulation is bulkier than down, taking more pack space
Limited to one style option (Synthetic, 0F) versus multiple temperature ratings

Good fit if

You need a sleeping bag rated for 0°F temperatures
You prefer synthetic insulation for its water-resistant properties
You want extra room in the shoulders and footbox

Skip if

You prioritize the absolute lightest weight possible for ultralight trips
You prefer down insulation for superior compressibility
You need a bag rated for extreme cold below 0°F

Verdict: TETON Sports Altos-S Synthetic 0°F Mummy Bag is a practical choice for hikers who need reliable cold-weather protection and extra comfort space. It suits those who value synthetic fill durability over minimal weight.

Specifications side by side

Spec	TETON Sports Tracker 5 Degree Double Mummy	Kelty Cosmic 20 Down Mummy Bag	QEZER 600FP Down Mummy Sleeping Bag	Kelty Cosmic Synthetic 0°F	Naturehike SP550 650FP Down Sleeping Bag	Browning Denali -30°F Mummy Bag	Sierra Designs Cloud Zip 20F	BUERTS 620FP Down Mummy Sleeping Bag	ALPS Mountaineering Genesis 0°F Synthetic Mummy	Big Agnes Torchlight EXP 0°F	Mountaintop 20F 650FP Duck Down Bag	Marmot Mad River 0°F Mummy Bag	TETON Sports Altos-S 0°F Synthetic Mummy Bag
Temperature Rating	5 Degree	21°	18°F	0°F	18°F	-30°F	17°F	17°F	0°F	0°F	20°F	0°F	0 Degree
Insulation Type	microfiber	down	Duck down	Synthetic	Duck down	Synthetic	DriDown	Down	synthetic	DownTek down	Duck down	duck down	–
Shape	mummy	mummy	Mummy	Mummy	Mummy	Mummy	mummy	Mummy	mummy	Mummy	Mummy	mummy	mummy
Capacity	Double	–	–	–	–	–	–	–	–	–	–	–	–
Weight	8.2 pounds	–	3.2 lbs.	4 lb. 12 oz.	2.03 pounds	9 lbs. 9 oz.	2.08 pounds	1.72 lbs	5 lbs. 1 oz.	3.63 lbs	2.46 lbs	4.2 pounds	3.5 pounds
Fill Power	–	550 FP	600+ FP	–	650 FP	–	800 Fill Power	620 FP	–	650 FP	650	–	–
Shell Material	–	recycled nylon and polyester taffeta	400T tear-resistant nylon	–	–	210T nylon diamond ripstop	15D nylon ripstop	400T 20D nylon	100% recycled polyester ripstop	Recycled 20D polyester ripstop	20D 420T ripstop nylon	100% recycled polyester	–
Lining Material	–	recycled nylon and polyester taffeta	400T tear-resistant nylon	–	–	210T polyester	–	–	–	–	–	100% recycled polyester	–
Intended Use	Hiking, Backpacking	Backpacking	Hiking, Backpacking	Backpacking	Hiking, Backpacking	–	Backpacking	Hiking, Backpacking, Mountaineering	Mountaineering	Backpacking	Hiking, Backpacking	–	Hiking, Backpacking
Color	Double Red	Laurel Green	Blue	Fired Brick Red	Blue	Charcoal/Gray	Green	Black	Iceberg Green/Spruce	Tangelo/Chinois Green	32 Degree-Navy Blue	Sun/Tangelo	Orange
Insulation Material	–	Down	Down	Synthetic	Down	–	Down	Down	Synthetic	–	Down	Down	Synthetic
Target Audience	–	–	Adults	–	Adults	–	–	Adults	–	–	–	–	Adults
Weather Condition	–	–	–	–	Cold Weather	–	–	Cold Weather	Cold Weather	Cold Weather	–	–	–
Recommended Use	Camping	–	Camping	–	Camping	Camping	–	Camping	Camping	Camping	Camping	–	Camping
Weight Class	Lightweight	–	Lightweight	–	–	–	Ultralight	–	–	Ultralight	Ultralight	–	Lightweight
Dimensions	87 × 63 × 3 inches	78 × 30 × 3 inches	84.6 × 31.5 × 3 inches	68 × 30 × 3 inches	15 × 7.09 × 3 inches	86 × 38 × 2 inches	84 × 32 × 3 inches	85.8 × 32.3 × 3 inches	80 × 32 × 3 inches	72 × 60 × 3 inches	–	72 × 65 × 3 inches	84 × 32 × 3 inches
Length	–	–	–	–	–	–	–	–	–	–	82.7 inches	–	–
Width	–	–	–	–	–	–	–	–	–	–	33.1 inches	–	–
Size	Double	Womens	18°F~45°F	Regular (2025)	Short	One Size	Long	X-Large	Standard	Regular – Left	82.5" x 33" x 19.7"	Standard	84 x 32 x 17
Model	1109	35413824RR	QDM-800Blue-US	35428525RR	–	4897911	–	BSM-C	4351313	BTEXPRL025	hiking600zangqing	0195115293253	1169

If you sleep in a tight mummy hood, you can compare dimensions for the best headphones for sleeping.

How to choose the right mummy sleeping bag

Check insulation type

Down offers better warmth-to-weight ratios, while synthetic insulation retains heat when wet. The QEZER 600FP Down Mummy Sleeping Bag uses 600 fill power down for a lightweight 1.76-pound build, ideal for backpackers carrying light loads. In contrast, the Kelty Cosmic Synthetic 0°F uses synthetic fill to handle damp conditions without losing thermal efficiency. Synthetic options like the ALPS Mountaineering Genesis 0°F Synthetic Mummy weigh more but provide reliable performance in moist environments where down might clump and fail.

Evaluate fill power

Higher fill power indicates loftier down that traps more air for warmth without adding bulk. The Sierra Designs Cloud Zip 20F features 800 fill power down, allowing it to deliver significant warmth in a compact 2.08-pound package. The Naturehike SP550 650FP Down Sleeping Bag uses 650 fill power, offering a balance of warmth and durability for cold weather. The Mountaintop 20F 650FP Duck Down Bag also utilizes 650 fill power to maintain ultralight status at 2.47 pounds, suitable for three-season trips where minimal weight is critical.

Match temperature ratings

Select a bag rated for the lowest temperatures you expect to encounter. The Browning Denali -30°F Mummy Bag provides extreme cold protection for hunting or winter camping, though it weighs 9.6 pounds. The Kelty Cosmic Synthetic 0°F and Big Agnes Torchlight EXP 0°F both offer 0°F ratings for serious cold weather backpacking. For milder conditions, the Kelty Cosmic 20 Down Mummy Bag and Sierra Designs Cloud Zip 20F are rated for 20°F, making them lighter and more packable for spring or fall trips.

Consider width and fit

Mummy bags taper to reduce dead air space, but width varies significantly. The TETON Sports Tracker 5 Degree Double Mummy provides a generous 63-inch width, accommodating two people or a single sleeper who prefers extra room. The Naturehike SP550 has a narrower 7.09-inch width in its packed state, emphasizing compactness. The Big Agnes Torchlight EXP 0°F offers an expandable fit system with a 60-inch width, allowing movement in cold conditions without the restrictive feel of traditional narrow mummy designs.

Assess weight class

Weight directly impacts comfort during long hikes. Ultralight options like the BUERTS 620FP Down Mummy Sleeping Bag weigh just 1.72 pounds, fitting easily into tight pack spaces. The QEZER bag weighs 1.76 pounds, also targeting weight-conscious backpackers. Heavier bags like the TETON Sports Tracker 5 Degree Double Mummy at 8.2 pounds or the Browning Denali at 9.6 pounds sacrifice portability for durability or dual occupancy. Choose based on whether you prioritize carrying less weight or needing features like double width.

Frequently asked questions

Which mummy sleeping bag is best for couples?

The TETON Sports Tracker 5 Degree Double Mummy is designed for two people. It features a 63-inch width and an 87-inch length to accommodate shared sleeping. Weighing 8.2 pounds, it is heavier than standard bags but provides ample space for couples camping in cold weather. This double-width design ensures both sleepers stay warm without crowding.

What is the lightest mummy sleeping bag on this list?

The BUERTS 620FP Down Mummy Sleeping Bag is the lightest option at 1.72 pounds. It offers an X-Large size with a 32.3-inch width for comfort. The QEZER 600FP Down Mummy Sleeping Bag is a close second at 1.76 pounds. Both bags use down insulation to maintain warmth while keeping pack weight minimal for backpackers.

Which sleeping bag has the lowest temperature rating?

The Browning Denali -30°F Mummy Bag has the lowest rating at -30°F. It weighs 9.6 pounds and features a 38-inch width for durability in extreme cold. The Kelty Cosmic Synthetic 0°F and ALPS Mountaineering Genesis 0°F Synthetic Mummy both offer 0°F ratings. These synthetic options provide reliable warmth in very cold conditions.

Are there mummy sleeping bags with high fill power down?

Yes, the Sierra Designs Cloud Zip 20F uses 800 fill power down insulation. It weighs 2.08 pounds and provides premium warmth for backpackers. The Naturehike SP550 650FP Down Sleeping Bag also uses down, specifically 650 fill power. These high-fill options offer excellent warmth-to-weight ratios, making them suitable for cold weather hiking and camping trips.

Which bags use synthetic insulation instead of down?

The Kelty Cosmic Synthetic 0°F, ALPS Mountaineering Genesis 0°F Synthetic Mummy, and TETON Sports Altos-S 0°F Synthetic Mummy Bag all use synthetic insulation. Synthetic fill retains heat when wet and is generally more durable in damp conditions. These bags are heavier than down alternatives but offer reliable performance in cold, moist environments without losing thermal efficiency.

What is the widest mummy sleeping bag available?

The Big Agnes Torchlight EXP 0°F offers a unique 60-inch width. It features an expandable fit system for backpackers who need extra movement space. The Marmot Mad River 0°F Mummy Bag also provides a wide 65-inch width. These wider designs prioritize comfort and roominess over the tight, compact fit typical of standard mummy bags.

Which sleeping bag is best for ultralight backpacking?

The Mountaintop 20F 650FP Duck Down Bag is an ultralight choice at 2.47 pounds. It features a 33.1-inch width and 650 fill power down for three-season use. The Sierra Designs Cloud Zip 20F is also classified as ultralight at 2.08 pounds. These bags balance minimal weight with sufficient warmth for hikers who prioritize pack size.

We compared 9 gray sleeping bags using only published specifications. Read our spec-focused guide to find the right model for your needs.

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