Thermarest

Thermarest Space Cowboy 7°C Sleeping Bag - Three Sizes

Q: Should I choose a down or synthetic sleeping bag?

Blog - How to choose a sleeping bag The right choice depends on how you camp. Down is lighter and warmer for its weight. Synthetic is better in wet conditions and usually cheaper. Which sleeping bag is best for hiking? Down sleeping bags are best for hiking because they’re lighter and pack smaller, making them easier to carry long distances. Which sleeping bag is better in wet weather? Synthetic sleeping bags are better in wet conditions because they still insulate when damp. Wet down doesn’t. Is a heavier sleeping bag warmer? Generally, yes. A heavier sleeping bag is usually warmer, regardless of whether it’s down or synthetic. Are synthetic sleeping bags better value? Yes. If you’re driving to camp and not carrying it far, synthetic sleeping bags usually give better warmth for the price. Which sleeping bag is easier to look after? Synthetic sleeping bags are easier to clean and maintain. Down needs more care. Quick answers Hiking and light packs: Down Car camping or wet weather: Synthetic Easy care and better value: Synthetic No bad options. Just different trade-offs — and fewer regrets at 3am.

$179.99

~~$379.99~~ $179.99

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Size Small Regular Long

The Space Cowboy sleeping bag welcomes the idea of sleeping out under the stars with the worry-free warmth of synthetic eraLoft™ insulation. Its hollow fibers allow it to retain warmth even when wet—shrugging off morning dew and drying out super fast. Weighing less than two pounds and with a comfort rating of 7°C , you’ll be plenty warm all summer, whether you’re road tripping or heading deep into the backcountry. Shell and liner are made of a light and soft, GRS-certified 100% recycled nylon, and an anti-snag YKK® zipper keeps them free of accidental tears. For optimal efficiency, SynergyLink^™ Connectors mate the bag to your sleeping pad, preventing drafts and cold spots. The precision-tuned fit makes sure you have the space you need, while eliminating unnecessary drafts and weight.

Features

-Recycled Shell & Liner: GRS-certified 100% recycled fabrics are eco-friendly while being lightweight, soft, and durable; anti-snag YKK zipper ensures easy entries and exits and prevents tears.
- eraLoft™ insulation: Efficient and compressible, our proprietary synthetic insulation uses hollow fibers to trap air and boost warmth without added weight; dries fast and retains loft and warmth even when wet.
-SynergyLink™ Connectors: Removable ultralight straps create a secure bag-to-sleeping pad connection that optimizes the comfort and thermal efficiency of your entire sleep system. SynergyLink Connectors function best with regular-sized sleeping pads that are 3 inches thick or less when inflated.
-YKK® Anti-Snag Zipper: Prevents accidental tears and eases entries and exits.
-Heat-Mapped Zoned Insulation: Delivers an elite warmth-to-weight ratio by allocating insulation to where you need it and reducing it where you don’t.
Combo stuff and storage sack included.

Color Celestial
Weight 0.84 kg
Fits Height up to 198 cm
Packed dimension 20 x 26 cm
EN Comfort (C) 11 C
EN Limit (C) 7 C
EN Extreme (C) -6 C
Fill material eraLoft™ Polyester Hollow Fiber
Fill weight (Standard) 1 lbs 9 oz
Fill weight (Metric) 0.72 kg
Shell fabric 100% Recycled Nylon RipStop w/ DWR
Lining fabric 100% Recycled Nylon RipStop
Country of Origin China

FAQs

Should I choose a down or synthetic sleeping bag?

Blog - How to choose a sleeping bag

The right choice depends on how you camp.
Down is lighter and warmer for its weight.
Synthetic is better in wet conditions and usually cheaper.

Which sleeping bag is best for hiking?
Down sleeping bags are best for hiking because they’re lighter and pack smaller, making them easier to carry long distances.

Which sleeping bag is better in wet weather?
Synthetic sleeping bags are better in wet conditions because they still insulate when damp. Wet down doesn’t.

Is a heavier sleeping bag warmer?
Generally, yes. A heavier sleeping bag is usually warmer, regardless of whether it’s down or synthetic.

Are synthetic sleeping bags better value?
Yes. If you’re driving to camp and not carrying it far, synthetic sleeping bags usually give better warmth for the price.

Which sleeping bag is easier to look after?
Synthetic sleeping bags are easier to clean and maintain. Down needs more care.

Quick answers
Hiking and light packs: Down
Car camping or wet weather: Synthetic
Easy care and better value: Synthetic

No bad options. Just different trade-offs — and fewer regrets at 3am.