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REI Co-op Trailmade 20 Sleeping Bag Review

Tate McReynolds bio photo
Andrew Shults bio photo
Jun 02, 2025
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Our Take:
3.9/5
The REI Co-op Trailmade 20 ($100) hits an appealing price point and delivers just enough performance for budget-conscious campers. Its relatively low weight and compact packed size make it a viable option for short backpacking trips, and the mummy shape with a cinchable hood adds thermal efficiency compared to most rectangular camping bags. That said, its aggressive taper feels overly restrictive for a camping bag, and in real-world conditions, its warmth fell well short of the advertised temperature rating.
Warmth

Warmth

2.5/5
Comfort

Comfort

2/5
Durability & Quality

Durability & Quality

3/5
Features

Features

3/5
Weight & Packed Size

Weight & Packed Size

4/5
Sustainability

Sustainability

3.6/5

Temp Rating

20˚F

Shape

Mummy

Insulation

Synthetic

Weight

3 lb. 4.6 oz.

Pros

One of the lightest and most packable synthetic sleeping bags.
Affordable.
Six sizes accommodate an impressive range of body types.

Cons

The temperature rating was not as advertised, leaving us cold at night.
Aggressively tapered mummy shape feels tight around the legs and feet.
The material feels cheap, especially compared to more premium models.

For this season's top models, see our guide to the Best Camping Sleeping Bags.

The synthetic REI Co-op Trailmade 20 carries an ISO Comfort Rating of 31°F and a Lower Limit of 21°F. Given those standardized numbers, I expected it to perform well on chilly shoulder-season nights—but in practice, it fell short. Even with a high R-value (8.8) sleeping pad and bundled up in a sweatshirt and sweats, I couldn’t stay warm during a damp 45°F night. Despite the mummy shape and cinchable hood, which should help retain heat, the Trailmade 20 just didn’t deliver. Overall, it's a disappointing sleeping bag for camping in anything but mild conditions and is best reserved for warm summer trips rather than the cooler temps it’s rated for.

The REI Co-op Trailmade 20 has a classic mummy shape, but the taper felt especially aggressive compared to other mummy bags I’ve used, including the Mountain Hardwear Bishop Pass 20, Kelty Cosmic Down 20, and Nemo Tempo 20. At 5’10”, I couldn’t cross my legs or bend my knees without feeling restricted, even though the regular size is supposedly designed for users up to 6 feet tall. If you’re a side sleeper or tend to shift positions at night, this bag isn’t the one.


The Trailmade also lacks adequate venting. On warmer nights (around 65 to 70°F), I found myself wishing for dual zippers or at least a dedicated vent to better regulate temperature. As it was, I kept toggling between too hot and too cold as I adjusted the main zipper. The polyester liner also felt a bit cheap to the touch, though that’s fairly expected at this price point.

The REI Co-op Trailmade 20 is built with budget-friendly materials that reflect its price point. The shell and liner both felt somewhat cheap to the touch—especially compared to some of the pricier models I’ve tested—but the fabric did seem relatively thick and tough enough to handle basic car camping wear and tear. The snag-resistant YKK zipper did not live up to its description and stuck occasionally, making it somewhat finicky to use. I also missed having some of the small design upgrades you find on higher-end camping sleeping bags—things like dual zippers or reinforced stress points that make a bag feel a little more dialed in.


That said, the Trailmade held its own in wet conditions. The recycled polyester shell is finished with a DWR coating, and when paired with synthetic insulation, the bag did an admirable job keeping moisture out. Even after several rainy nights, I never felt moisture on the interior of the bag. For a model at this price point, that level of water resistance is worth noting.

The REI Co-op Trailmade 20 doesn’t break new ground when it comes to features, but it covers the essentials well, especially for a budget-friendly bag. There’s a convenient zippered stash pocket on the exterior for small items like a phone or headlamp, and the generously sized hood is a standout feature. Most camping sleeping bags don’t have a hood at all, but the Trailmade not only includes one—it also adds extra padding around the face and dual drawcords (one round, one flat) to independently adjust the top and bottom of the hood. I found it easy to dial in the fit, even in low light when I couldn’t clearly see the cords.


The bag also includes a left-side zipper with a draft tube to minimize heat loss, though I did miss the added venting and accessibility that dual zippers provide. One notable plus: the Trailmade comes in six different sizes—short, regular, and long, each available in a standard or wide version. That’s double the options of the Kelty Cosmic 20 and far more than most other camping bags offer. While it doesn’t boast any flashy or innovative features, the Trailmade’s design is thoughtfully functional and hits the mark for an entry-level model.

At 3 pounds 4.6 ounces for the regular size, the REI Co-op Trailmade 20 is the lightest synthetic bag in this guide—only the down-filled Kelty Cosmic and Galactic come in lighter. Its compressed volume is a manageable 9.4 liters, and the included stuff sack has a 14.4-liter capacity, offering a bit of extra space so you don’t have to perfectly compress the bag every time you pack it. While it’s not ideal for extended backpacking trips due to its bulk and moderate weight, it could work for shorter summer overnights when the weather is mild and pack space isn’t at a premium.

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Longevity

Choosing durable outdoor gear and keeping it in use for longer is one of the best ways to reduce environmental impact. Our proprietary longevity rating assesses factors like overall build quality, materials, fabric denier, component durability, and real-world performance. A green check indicates that we expect the product to be long-lasting relative to its peers, a yellow check mark indicates average longevity, and a red X indicates a product that may have a limited lifespan.

I tested the regular-size REI Co-op Trailmade 20, which is designed to fit people up to 72 inches tall and has a shoulder girth of 62 inches and hip girth of 58 inches. At 5’10”, I figured it would be a solid fit—but I found the taper to be way more aggressive than expected. Compared to other mummy bags I’ve used, like the Kelty Cosmic or Nemo Tempo, this one felt noticeably tighter in the legs and feet. I couldn’t cross my legs or bend my knees without feeling restricted, which made it tough to get comfortable.


The Trailmade 20 comes in an impressive six different sizes—various combinations of two widths and three lengths—which is unheard of among camping sleeping bags. On the small end, the short version accommodates campers up to 66 inches (5’6”), while the long wide maxes out at 78 inches tall (6’6”) with a roomy 70-inch shoulder girth and 66-inch hip girth. If you’re considering the Trailmade, your best bet is to head into an REI store and test a few sizes to find the best match for your body.

Coleman Arch Bay 30 ($80): The Most Wallet-Friendly Option
In the battle for the cheapest camping sleeping bag, the Coleman Arch Bay 30 takes the crown. At just $80, it won’t wow anyone with its warmth or build quality, but it gets the job done for occasional summer use. Like the Trailmade, it’s best reserved for warm-weather trips—but with no hood, it leans even harder into the fair-weather-only category. Still, it has a few perks that punch above its price: the extended bottom helps keep your pillow in place and off the ground, and the soft fabric around the top adds a welcome touch of comfort around the face and neck. Its roomy rectangular shape is also much more accommodating for side sleepers and sprawlers than the tapered Trailmade. The downside? At over 6 pounds, it’s far too heavy for anything beyond short car-camping walks. But for budget-conscious campers sticking to mild summer nights, it’s a solid, no-frills option. For more, read our review of the Coleman Arch Bay 30.


Kelty Cosmic 20 ($170): A Down-Filled Mummy
If you’re looking for a mummy-style sleeping bag that outperforms the Trailmade in nearly every way, the Kelty Cosmic is a clear winner. It offers more room through the legs and feet, and its 550-fill-power down insulation provides a major boost in both warmth-to-weight ratio and compressibility. At roughly 14 ounces lighter than the Trailmade and with a significantly smaller packed size, the Cosmic is a much more practical choice for backpacking. It’s also warmer: despite sharing the same 31°F comfort rating, our testers found the Cosmic better at retaining heat in real-world conditions. Like all down bags, it’s more susceptible to moisture, and at $170, it’s a steeper investment. But if you can swing the extra cost, the Cosmic delivers better performance, broader versatility, and a more dialed-in design than REI’s budget-friendly option. For more, read the Kelty Cosmic 20 review.

REI Co-op Trailmade 20 ($120)
Sitting up in REI Co-op Trailmade 20 camping sleeping bag
3.9/5

An entry-level sleeping bag designed for beginner campers, the Trailmade’s best attributes are affordability and a relatively streamlined weight and packed size. However, its warmth and aggressive taper left us wishing we’d ponied up more cash for a better bag.

Temp Rating
20˚F
Shape
Mummy
Insulation
Synthetic
Weight
3 lb. 4.6 oz.
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Warmth

2.5/5
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Comfort

2/5
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Durability & Quality

3/5
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Features

3/5
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Weight & Packed Size

4/5
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Sustainability

3.6/5
Coleman Arch Bay 30 ($81)
Laying out Coleman Arch Bay camping sleeping bag
3.8/5

The Arch Bay is the least expensive bag on this list, and doesn’t include many of the bells and whistles of higher-priced options. While it won’t win any awards for its durability or performance, it's a serviceable budget option for the occasional summer camper. 

Temp Rating
30°F (15˚F)
Shape
Rectangular
Insulation
Synthetic
Weight
6 lb. 5.6 oz.
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Warmth

2.5/5
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Comfort

3.5/5
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Durability & Quality

2.5/5
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Features

2.5/5
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Weight & Packed Size

1.5/5
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Sustainability

2.3/5
Kelty Cosmic Down 20 ($190)
Unpacking the Kelty Cosmic 20 Sleeping Bag
4.2/5

The down-filled Cosmic stands out for its packability and weight savings and is a suitable crossover pick for both car camping and light backcountry use. However, it runs colder than its temperature rating and might feel a bit snug.

Temp Rating
20˚F (0, 40˚F)
Shape
Mummy
Insulation
1 lb. 0.4 oz. of 550-fill down
Weight
2 lb. 7 oz.
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Warmth

4.5/5
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Comfort

3/5
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Durability & Quality

3.5/5
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Features

3/5
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Weight & Packed Size

4.5/5
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Sustainability

3.1/5

Is the Trailmade 20 for You?

If you’re in the market for a budget sleeping bag that can pull double duty for both camping and light backpacking, the REI Co-op Trailmade 20 is worth considering. Its relatively low weight and compact packed size—at least compared to most camping bags—make it feasible to toss in a backpacking pack. While we weren’t overly impressed with its real-world warmth, the mummy shape and cinchable hood do add meaningful thermal efficiency compared to roomier rectangular models, although the aggressive taper is undeniably restrictive. If you’re after an affordable and versatile starter bag, the Trailmade 20 has its merits—but spending a bit more will get you better warmth, comfort, and long-term usability.

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