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Space Cowboy Sleeping Bag: 45F Synthetic

4.666666666666667 out of 5 stars
3 Reviews
Current price: $113.97 - $125.37 Original price: $219.95
43% off



Why We Like The Space Cowboy Sleeping Bag

Cowboy camping is an art, and whether we're sleeping out by a cactus or in a grove of pine trees, we need something to keep us warm like the Therm-a-Rest 45-Degree Synthetic Space Cowboy Sleeping Bag. Therm-a-Rest zoned the eraLoft insulation so that it maximizes warmth, with 65% of the insulation in the top of the bag. Meanwhile, the water-resistant fill that won't lose its insulating properties if you happen to get the bag damp.


  • Lightweight sleeping bag for summer camping
  • EraLoft insulation is compressible and water-resistant
  • DWR treatment resists dew and spills
  • Zoned insulation maximizes warmth in vulnerable areas
  • ThermaCapture lining reflects heat without adding weight
  • SynergyLink Connectors integrate your bag and pad
  • Loops compatible with other Therm-a-Rest blankets
  • Snag-free zipper makes getting in and out easy
  • Item #TAEA06U
[shell] 20D polyester ripstop, DWR coating, [lining] 20D polyester taffeta
120g eraLoft (polyester), ThermaCapture
Max User Height
[small] 5ft 6in, [regular] 6ft, [long] 6ft 6in
Shoulder Circumference
[small] 56.5in, [regular] 61.5in, [long] 64.5in
Hip Circumference
[small] 56.5in, [regular] 58in, [long] 58.5in
Foot Circumference
[small] 42.5in, [regular] 44.5in, [long] 49.5in
Bag Length
[small] 5ft 6in, [regular] 6ft, [long] 6ft 6in
Pad Retainer
external sleeves
Fill Weight
[small] 7.9oz, [regular] 8.8oz, [long] 9.5oz
European Norm/ISO Comfort Rating
European Norm/ISO Lower Limit Rating
Stuff Size
7 x 10in
Claimed Weight
[small] 1lb 10oz, [regular] 1lb 12oz, [long] 1lb 14oz
Manufacturer Warranty

Overall Rating

4.5 based on 3 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 2 reviews

What do you think about this product?


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5 out of 5 stars

June 11, 2024

I’d make room in my galactic saddlebag for this

Lightweight, comfortable for summer temps, and very compressible for a synthetic bag. I’ve never slept in a mummy style rated for summer temps, but the straps that secure the bag to the ground pad kept the bag in place and I was able to toss and turn (as usual) without any impediment. A wonderful lightweight option for summer trips, and I would bet it would stretch to shoulder season weather with the addition of a quilt or other layered sleep system.

Connor D.
a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

5 out of 5 stars

January 24, 2023

Can do it all

Great Bag! Packs up small and is cool enough that I’ll enjoy it in the other 3 seasons but currently using it for winter with the synergy liner and it has been sufficiently warm and light for touring adventures.

Mike F.
a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

4 out of 5 stars

August 16, 2022

the almost perfect sack

I know this doesn't matter at all when it comes to gear but it is nice to such a fun colored bag. I've used it a few times now that I've had it for a month and it is a great bag. The materials are comfortable to sleep in. the length of the bag is great. I am a little bit more broad shouldered then most, and I still fit in the bag well. Only thing in my opinion to make the bag a more versatile bag is if it fully unzipped to use as a blanket on warmer nights. It packs down very nice and is light weight. Would recommend this bag to anyone looking for one.

Scamp V.
a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site