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Therm-a-Rest
Therm-a-Rest Space Cowboy Sleeping Bag

Therm-a-Rest Space Cowboy Sleeping Bag

4.6· 66 ratings

Best price now

$108.73at REIObserved at 2:11 PM

27% under what the other stores charge

Compared across 4 stores. Prices are checked against each store and labelled with when.

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Our take on the Therm-a-Rest Space Cowboy Sleeping Bag

The Therm-a-Rest Space Cowboy is a synthetic-fill mummy sleeping bag rated to 7°C (about 45°F), aimed at mild-weather camping rather than cold nights. It weighs 1 lb 10 oz (0.72 kg) and comes in Small, Regular and Long, with a recycled nylon ripstop lining and SynergyLink connectors so it can mate with a pad or a second bag. The Regular measures 80 by 31 inches. At $108.73 at REI as of November 3, 2026, it sits at the low end of its recent range, with four stores listing it new.

Best forSummer and mild-weather tent campingUltralight backpackers counting ouncesCouples or pad users who want SynergyLink pairingBuyers who prefer synthetic fill over down
Pros
  • Light for a synthetic bag at 1 lb 10 oz
  • 7°C rating suits warm-weather trips
  • SynergyLink connectors keep the bag on the pad
  • Snag-free zipper with draft tube
  • Recycled, GRS-certified ripstop lining
  • Three sizes, including a Long for taller sleepers
Cons
  • Not warm enough for three-season or cold camping
  • Synthetic fill packs larger than down
  • Mummy cut is snug for side sleepers
  • Limited color choice

Therm-a-Rest Space Cowboy Sleeping Bag prices at every store

  • REINew

    In stock

    $108.73Observed at 2:11 PM
    Visit store
  • Appomattox River Co.New

    In stock

    $149.95Observed at 2:11 PM
    Visit store
  • Leacock Coleman CenterNew

    In stock

    $210.00Observed at 2:11 PM
    Visit store
  • Pro Ski and Mountain ServiceNew

    Out of stock

    $199.95Observed at 2:11 PM
    Visit store

Also available at

  • eBayCheck price at eBay
  • BananaFingersCheck price at BananaFingers
  • EpicTVCheck price at EpicTV
  • OliunìdCheck price at Oliunìd
  • SRE OutdoorsCheck price at SRE Outdoors
  • Walkabout OutfitterCheck price at Walkabout Outfitter
  • Out&Back OutdoorCheck price at Out&Back Outdoor

Therm-a-Rest Space Cowboy Sleeping Bag price history

Lowest price we've seen: $43.99 on Nov 3. Tracked across 13 stores since Nov 3.

What reviewers say

Rated 4.6 out of 5 from 66 ratings, owners generally like the light weight and the pad connectors for warm-weather trips. Complaints center on the temperature rating being optimistic and the bag being tight for bigger sleepers.

Pros
  • Very light and easy to pack
  • SynergyLink keeps the bag from sliding off the pad
  • Zipper runs smoothly without snagging
  • Good value for a synthetic summer bag
Cons
  • Feels cold below the stated 7°C rating
  • Snug mummy fit
  • Bulkier packed size than down alternatives

Specifications

Color
Celestial
Temperature Rating
7C
Closure Type
Zipper
Fill Type
Synthetic
Size
Long, Regular, Small
Count
3
Item Weight
Less than two pounds, 0.72 kg, 1 lbs 10 oz
Material Type
100% Recycled Nylon RipStop (Lining fabric)
Material Certifications
GRS-certified
Age Group
Adult
Occasion
Camping
Typical Users
Unisex
Fit Style
Precision-tuned fit
Shape
Mummy
Theme
Space Cowboy
Design Highlights
Stuff sack
Length
80 in (Regular)
Width
31 in (Regular)

Questions and answers

Is the Space Cowboy warm enough for three-season camping?
No. Its 7°C (about 45°F) rating is a mild-weather bag. For spring or fall nights, look at a bag rated near 0°C or lower.
How does it compare with a down bag?
It is cheaper and handles damp better, but it weighs more and packs larger than a comparable down bag. Down wins on packed size and warmth per ounce.
Which size should I pick?
The Regular fits most adults at 80 inches long and 31 inches wide. Choose Long if you are over about 6 feet, and Small for shorter or lighter sleepers.
What is in the box?
The bag and a stuff sack. The SynergyLink connectors are built into the bag.
Does it work with a sleeping pad?
Yes. The SynergyLink connectors attach the bag to most pads so it stays put through the night.
When is it cheapest?
The $108.73 at REI as of November 3, 2026 is already near the low end of its recent range. End-of-season sales in late summer and fall are the usual times for further discounts.
Where is the Therm-a-Rest Space Cowboy Sleeping Bag cheapest?
At REI, for $108.73, 27% under what the other stores charge, as of our latest check.
What do buyers say about the Therm-a-Rest Space Cowboy Sleeping Bag?
Rated 4.6 out of 5 from 66 ratings.
Where can I buy the Therm-a-Rest Space Cowboy Sleeping Bag?
11 stores we checked sell it, including Leacock Coleman Center, REI, Appomattox River Co., Pro Ski and Mountain Service, eBay.