Therm-A-Rest Space Cowboy 45F Degree Sleeping Bag
Product details
| Management number | 235369825 | Release Date | 2026/07/02 | List Price | $39.99 | Model Number | 235369825 | ||
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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 45F/7C, 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.
- 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: Removeable 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.
| Long | Regular | Small | |
|---|---|---|---|
| SKU | 11391 | 11390 | 11389 |
| Color | Celestial | Celestial | Celestial |
| Weight (Standard) | 1 lbs 14 oz | 1 lbs 12 oz | 1 lbs 10 oz |
| Weight (Metric) | 0.84 kg | 0.78 kg | 0.72 kg |
| Width (Standard) | 32.5 in | 31 in | 28.5 in |
| Length (Standard) | 85 in | 80 in | 73 in |
| Height (Standard) | 3.5 in | 3.5 in | 3.5 in |
| Fits (Standard) | 78 in | 72 in | 66 in |
| Fits (Metric) | 198 cm | 183 cm | 168 cm |
| Girth Shoulder (Standard) | 65 in | 62 in | 57 in |
| Girth Shoulder (Metric) | 165 cm | 157 cm | 145 cm |
| Girth Hip (Standard) | 58 in | 57 in | 56 in |
| Girth Hip (Metric) | 147 cm | 145 cm | 142 cm |
| Girth Foot box (Standard) | 51 in | 46 in | 44 in |
| Girth Foot box (Metric) | 130 cm | 117 cm | 112 cm |
| Packed dimension (Standard) | 8 x 10 in | 8 x 10 in | 8 x 10 in |
| Packed dimension (Metric) | 20 x 26 cm | 20 x 26 cm | 20 x 26 cm |
| EN Comfort (C) | 11 C | 11 C | 11 C |
| EN Comfort (F) | 52 F | 52 F | 52 F |
| EN Limit (C) | 7 C | 7 C | 7 C |
| EN Limit (F) | 45 F | 45 F | 45 F |
| EN Extreme (F) | 21 F | 21 F | 21 F |
| EN Extreme (C) | -6 C | -6 C | -6 C |
| Fill material | eraLoft Polyester Hollow Fiber | eraLoft Polyester Hollow Fiber | eraLoft Polyester Hollow Fiber |
| Fill weight (Standard) | 1 lbs 9 oz | 1 lbs 7 oz | 1 lbs 4 oz |
| Fill weight (Metric) | 0.72 kg | 0.65 kg | 0.58 kg |
| Shell fabric | 100% Recycled Nylon RipStop w/ DWR | 100% Recycled Nylon RipStop w/ DWR | 100% Recycled Nylon RipStop w/ DWR |
| Lining fabric | 100% Recycled Nylon RipStop | 100% Recycled Nylon RipStop | 100% Recycled Nylon RipStop |
| Country of Origin | China | China | China |
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