Space Cowboy 45

$139.96 - $153.96
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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.

The Space Cowboy's 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 its 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.

Sleeping pad sold separately.


- Small: 1 lb 10 oz
- Regular: 1 lb 12 oz
- Long: 1 lb 14 oz
Temperature Rating F:
45° F
Temperature Rating C:
7° C
Insulation Type:
eraLoft™ synthetic insulation
Fill Weight:
- Small: 20 oz
- Regular: 23 oz
- Long: 25 oz
Shell Material:
100% Recycled Nylon Ripstop w/ DWR
Lining Material:
100% Recycled Nylon Ripstop
- Small: fits users up to 5 ft 6 in
- Regular: fits users up to 6 ft
- Long: fits users up to 6 ft 6 in
Stuff Size:
8 x 10 in
Circumference at Shoulders:
- Small: 57 in
- Regular: 62 in
- Long: 65 in
Circumference at Hips:
- Small: 56 in
- Regular: 57 in
- Long: 58 in
Circumference at Foot:
- Small: 44 in
- Regular: 46 in
- Long: 51 in
Other 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: Ultralight straps create a secure bag-to-sleeping pad connection that optimizes the comfort and thermal efficiency of your entire sleep system.
  • 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.