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Best Winter Sleeping Bags (20°F & Below)

Built for extreme cold weather camping, winter expeditions, and sub-zero temperatures

Showing 8 sleeping bags

Editor's Choice Kelty Cosmic 0 Ultra sleeping bag
Kelty

Cosmic 0 Ultra 4-Season Down Mummy Sleeping Bag

0°F Rating 800 Fill Down 2 lbs 13 oz
★★★★★ 4.6 (245 reviews)

800 fill DriDown insulation with trapezoidal baffle construction for maximum warmth. Features dual sliding zippers and anti-snag draft tube.

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Best Value TETON Sports Altos sleeping bag
TETON Sports

Altos 0 Degree Lightweight Mummy Sleeping Bag

0°F Rating Down Fill 3 lbs 2 oz
★★★★★ 4.5 (890 reviews)

Water-resistant down sleeping bag that's lightweight and highly compressible. Bigger than industry standard for maximum mobility.

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Budget Pick 0 Degree Winter Sleeping Bag
Generic

0 Degree Winter Sleeping Bag for Adults Camping

5°F - 32°F Synthetic 5.5 lbs
★★★★☆ 4.3 (1,250 reviews)

Portable waterproof bag with compression sack. Great for big and tall campers with envelope hoodie design.

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TETON Deer Hunter sleeping bag
TETON Sports

Deer Hunter -35F and 0F Degree Sleeping Bag

-35°F to 0°F Synthetic 9 lbs
★★★★★ 4.6 (567 reviews)

Tough canvas shell for extreme durability. Perfect for hunting, camping, and extreme cold weather adventures.

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OneTigris sleeping bag
OneTigris

Survival Gear 32°F Cold Weather Mummy Sleeping Bag

32°F Rating Synthetic 3.2 lbs
★★★★☆ 4.4 (423 reviews)

Tactical-style mummy bag for camping, hiking, and backpacking. Lightweight and durable construction.

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BISINNA Mummy sleeping bag
BISINNA

Mummy Sleeping Bag 14-41°F Cold Weather 3-4 Season

14°F - 41°F Synthetic 4 lbs
★★★★☆ 4.2 (312 reviews)

Stretches to 7 feet for users up to 6'1". Extra shoulder space and stretchable footbox for comfort.

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Naturehike Mummy sleeping bag
Naturehike

Mummy Sleeping Bags 23/39°F Portable Backpacking

23°F - 39°F Synthetic 3.5 lbs
★★★★☆ 4.4 (678 reviews)

4-season 0 degree lightweight bag ideal for car camping, hiking, hunting, and travel.

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Hewolf Down sleeping bag
Hewolf

Down Sleeping Bag Mummy Cold Weather Backpacking

Cold Weather 800g Down 2.5 lbs
★★★★☆ 4.3 (189 reviews)

Lightweight waterproof down bag with compression sack. Great warmth-to-weight ratio for backpacking.

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Choosing a Winter Sleeping Bag

When temperatures drop below freezing, having the right sleeping bag can mean the difference between a comfortable night and a miserable (or dangerous) experience. Winter sleeping bags are specifically designed to handle extreme cold, with features that trap heat and block drafts.

Key Features to Look For

  • Temperature Rating: Look for bags rated 20°F (-7°C) or lower. Remember that ratings are typically "survival" temps - add 10-15 degrees for comfort.
  • Draft Collar: An insulated collar around your neck prevents warm air from escaping.
  • Hood Design: A well-designed hood with cinch cord keeps heat in around your head.
  • Zipper Draft Tube: Insulated tube along the zipper prevents cold spots.
  • Fill Power: For down bags, 800+ fill power offers the best warmth-to-weight ratio.
Pro Tip: In extreme cold, consider using a sleeping bag liner for an extra 5-15 degrees of warmth and to keep your bag clean.