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Sleeping Bags
Three-season sleeping bags ranked on warmth, weight, and fill.
A sleeping bag's job is simple: keep you warm at its rated temperature without weighing down your pack. The numbers that matter are the EN/ISO lower-limit rating, the insulation type and fill power, and the total weight. A 15-degree down bag at under 2 pounds and a 20-degree synthetic bag at 3.5 pounds can both be excellent; they simply serve different campers and budgets.
The ten bags below cover the three-season range, 0 to 30 degrees Fahrenheit, in both down and synthetic fills. Every temperature rating cited is the standardized EN/ISO lower limit, not a marketing comfort claim, so the numbers are comparable across brands.
Every guide on sleeping bags
13 guides
Best of
The Best Sleeping Bags (2027)
The best sleeping bags for 2027, ranked on EN temperature rating, insulation quality, weight, and value. Down and synthetic three-season picks.
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For backpackers
The Best Sleeping Bags for Backpacking (2027)
The best backpacking sleeping bags for 2027: warm, light, and compressible bags ranked on warmth-to-weight ratio.
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For cold sleepers
The Best Sleeping Bags for Cold Weather (2027)
The best cold-weather sleeping bags for 2027: bags that hold warmth when temperatures drop below freezing.
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For tight budgets
The Best Budget Sleeping Bags (2027)
The best budget sleeping bags for 2027: warm, honest bags that keep costs down without fake temperature ratings.
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Review
Big Agnes Torchlight UL 20 Review (2027)
Big Agnes Torchlight UL 20 · 850-fill DownTek warmth with expandable panels that add room on demand.
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Review
Kelty Cosmic 20 Review (2027)
Kelty Cosmic 20 · The budget down bag that made 550-fill famous.
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Review
Marmot Trestles Elite Eco 20 Review (2027)
Marmot Trestles Elite Eco 20 · The synthetic workhorse that stays warm even when damp.
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Review
Coleman North Rim 0°F Big and Tall Sleeping Bag Review (2027)
Coleman North Rim 0°F Big and Tall Sleeping Bag · A 0-degree mummy bag in a big and tall cut, with an adjustable hood.
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Review
Coleman Brazos 30°F Sleeping Bag Review (2027)
Coleman Brazos 30°F Sleeping Bag · A 30-degree rectangular bag with Fiberlock construction and a no-snag zipper.
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Head to head
Big Agnes Torchlight UL 20 vs Kelty Cosmic 20 (2027)
Head-to-head: Big Agnes Torchlight UL 20 versus Kelty Cosmic 20 on warmth, weight, fill power, expandable fit, and whether the premium is worth it.
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Head to head
Marmot Trestles Elite Eco 20 vs Kelty Cosmic 20 (2027)
Head-to-head: Marmot Trestles Elite Eco 20 versus Kelty Cosmic 20, synthetic reliability against budget down value.
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Buying guide
Sleeping Bags Buying Guide (2027)
How to choose a sleeping bag in 2027: EN temperature ratings, down versus synthetic, fill power, shapes, and pads explained.
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Fix it
Sleeping Bag Not Warm Enough? Fixes (2027)
Why your sleeping bag feels cold and how to fix it: pad R-value, drafts, liners, and the mistakes that steal warmth.
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