Thermarest - Space Cowboy 45 Bag

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Thermarest - Space Cowboy 45 Bag
Price From: $129.95

Availability: In stock

Stock #: HEBB-

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Price From: $129.95


The feather-weight Space Cowboy is built with eraLoft™ 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.
  • SynergyLink™ Connectors: Integrate the bag with a mattress for optimal comfort and efficiency; removable for versatility.
  • Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most. Placing 65% of the fill on top and 35% on the bottom keeps the Space Cowboy lightweight without sacrificing warmth.
  • Quilt and Blanket Loops: Customize your sleep system by layering our quilts or tech blankets for increased warmth.
  • Additional features: Snag-free zipper and cinchable hood.


Size Small Regular Long
Weight : 1lbs 2oz (0.50kg) 1lbs 4oz (.57kg) 1lbs 6oz (.62kg)
Width: 28 in (72cm) 31.5in (80cm) 32in (80cm)
Length: 73in (185 cm) 80 in (201cm) 85in (216cm)
Height: 3.5in (10cm)
Fits: 66in (168cm) 72in (183cm) 78in (198cm)
Shoulder Girth: 56.5in (144cm) 61.5in (156cm) 64.5in (164cm)
Hip Girth: 56.5in (144cm) 58in (147cm) 58.5in (149cm)
Foot Box Girth: 44in (112cm) 44.5in (113cm) 49.5in (126cm)
Packed Dimensions: 7 in x 10 in (18 cm x 25 cm)
EN Comfort: 52 F/11 C
EN Limit: 45 F/7 C
EN Extreme: 21 F/-6 C
Fill Material: eraLoft 120g 3D Hollow Polyester Fiber
Fill Weight: 9 oz (0.24 kg) 9 oz (0.27 kg) 10 oz (0.29 kg)
Shell Fabric: 20D Polyester Ripstop w/DWR
Lining Fabric: 20D Polyester Taffeta
Zipper Side: Left
Country of Origin: China

Additional Information

Material 20D Polyester Ripstop w/DWR
Insulation eraLoft 120g 3D Hollow Polyester Fiber
Temp Rating 52 F to 21F
Length 72 in
Shoulder Girth 61.5 in
Hip Girth 58 in
Foot Girth 44.5 in
Packed Size 7 in x 10 in
Weight 1 lbs 4 oz
Zipper Type Left


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