SKU: TSS10288

Thermarest 7C Space CowBoy 45 Ether Sleeping Bag

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Availability: Ships direct from supplier.
Delivery: 3-7 working days.

Built to explore the last frontier, the Space Cowboy sleeping bag is an instant favorite for summer thru-hikers and dirtbag cowboy campers.

The feather-weight Space Cowboy is built with eraLoft synthetic insulation to endure the rigors of backpacking and cowboy camping in variable conditions. Designed with innovative Therm-a-Rest features like SynergyLink Connectors and Zoned Insulation, the bag is among the lightest and most packable in its class. The mummy-style bag compresses down to take up minimal room in your pack and comes in two outdoor-inspired colors.

Whether exploring the western frontier, bike packing through the desert or wandering through the wild, the Space Cowboy has you covered. Storage sack and compression stuff sack included.

eraLoft Insulation: Efficient and compressible, our water-resistant synthetic fill uses hollow fibers to reduce weight without sacrificing warmth.
ThermaCapture Lining: Top of bag is lined to trap radiant body heat and retain warmth without adding bulk or weight.
SynergyLink Connectors: Integrates the bag and mattress for optimal comfort and efficiency; removable for versatility.
Zoned Insulation: Maximizes warmth and saves weight while using eraLoft synthetic insulation
Quilt and Blanket Loops: Customize your sleep system by layering our quilts or tech blankets for increased warmth.

  • Packed dimensions: 41x23cm
  • Comfort range: 11°C
  • Transition range: 7°C
  • Risk range: -6°C
  • Liner fabric: 20D Polyester Taffeta w/ ThermaCapture coating
  • Shell fabric: 20D RipStop Polyester
  • Fill: eraLoft 3D Hollow Polyester Fiber w/ ThermaCapture Lining
  • Zipper side: Left


  • Length: 168cm
  • Weight: 482 g
  • Girth, Shoulder: 144 cm
  • Girth, Hip: 144 cm
  • Girth, Foot box: 108 cm
  • Fill weight: 223 g
  • Length: 183cm
  • Weight: 545 g
  • Girth, Shoulder: 156 cm
  • Girth, Hip: 147 cm
  • Girth, Foot box: 113 cm
  • Fill weight: 249 g


  • Length: 198cm
  • Weight: 595 g
  • Girth, Shoulder: 164 cm
  • Girth, Hip: 149 cm
  • Girth, Foot box: 126 cm
  • Fill weight: 269 g