Best 3-Season Sleeping Bags (20-35°F)

Showing 8 sleeping bags

Editor's Choice Kelty Cosmic 20 sleeping bag

Kelty

Cosmic 20 Degree 550 Down Fill Sleeping Bag

20°F Rating 550 Fill Down 2 lbs 6 oz

★★★★★ 4.7 (1,890 reviews)

Premium thermal efficiency with recycled PFAS-free materials. Soft to touch with large footbox and compression stuff sack included.

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Best Hybrid Klymit KSB 20 sleeping bag

Klymit

KSB Lightweight Mummy Sleeping Bag 20°F

20°F Rating 650 Down/Synthetic 2 lbs 13 oz

★★★★★ 4.5 (567 reviews)

650 power fill down on top with double layer synthetic batting beneath for 3-season comfort and versatility.

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Kelty

Galactic 30 Deg 600 DriDown Backpacking Sleeping Bag

30°F Rating 600 Fill Down 2 lbs 3 oz

★★★★☆ 4.4 (423 reviews)

600 fill DriDown treated for water resistance. Perfect balance of warmth and packability for backpacking.

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Eco-Friendly North Face Eco Trail sleeping bag

The North Face

Eco Trail Synthetic 20F Backpacking Sleeping Bag

20°F / -7°C Synthetic 3 lbs

★★★★★ 4.6 (312 reviews)

Made with recycled materials. Reliable synthetic insulation that performs in wet conditions.

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Best Value TETON Sports sleeping bag

TETON Sports

Teton 20F and 5F Degree Mummy Sleeping Bag

20°F / 5°F Synthetic 3 lbs 3 oz

★★★★★ 4.5 (2,345 reviews)

Innovative microfiber insulation with more loft and excellent compressibility. Great for backpacking and hiking.

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VILLEY

Mummy Sleeping Bag Lightweight Backpacking 3-4 Season

23°F - 50°F Synthetic 3.3 lbs

★★★★☆ 4.3 (1,567 reviews)

Comfort temp 41-50°F with extreme rating down to 23°F. Packs into 9.3"L x 16.9"H carry bag.

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SereneLife

Backpacking Sleeping Bag Camping Gear with Pillow

3-Season Synthetic 3.5 lbs

★★★★☆ 4.2 (890 reviews)

Comes with travel pillow, phone pocket, and compression bag. Soft inner liner with waterproof shell.

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Nature Link

Lightweight Mummy Sleeping Bag 42-55°F Ultralight

42°F - 55°F Synthetic 2.87 lbs

★★★★☆ 4.1 (234 reviews)

Nylon shell and lining with 300g/m² imitation silk cotton fill. Compresses to just 13" height.

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Why Choose a 3-Season Sleeping Bag?

3-season sleeping bags are the most versatile option for most campers. They're designed for spring, summer, and fall use when temperatures typically range from the 20s to 50s°F. These bags offer the best balance of warmth, weight, and packability.

Who Should Buy a 3-Season Bag?

Backpackers: Need a good balance of warmth and weight savings
Weekend Campers: Want versatility for multiple seasons
Fair-Weather Adventurers: Camp mostly in spring through fall
Budget-Conscious Buyers: Want one bag that works for most trips

Tip: If you sleep cold, consider getting a bag rated 10-15 degrees lower than the temperatures you expect to encounter.