REI Co-op Trailmade 25 Sleeping Bag

The REI Co-op Trailmade 25 Sleeping Bag is a synthetic mummy bag built for backpacking trips and overnight setups. Its shingled top construction and layered bottom deliver reliable warmth with reduced bulk, while a face muffler, full draft tube and contoured hood add extra protection from the cold.

The shell and lining are made from 100% recycled polyester with a durable water repellent finish made without PFAS, and the 100% recycled synthetic fill keeps insulating even in damp conditions. A snag-resistant zipper with locking slider allows footbox venting, an interior stash pocket keeps small essentials handy, and the included stuff sack is optimized to fit the lower compartment of the REI Co-op Trailmade 60 pack.

Key Features

Best Use	Backpacking, Camping
Tested Lower Limit	20 degrees (F) - ISO
Tested Comfort	31 degrees (F) - ISO
Temperature Rating (F)	25 degrees (F)
Temperature Rating (C)	-4 degrees (C)
Weight	Short: 2 lbs. 12.35 oz. Short Wide: 3 lbs. Medium: 2 lbs. 15.14 oz. Medium Wide: 3 lbs. 3.25 oz. Long: 3 lbs. 2.48 oz. Long Wide: 3 lbs. 8.26 oz.
Shell	30-denier, 100% recycled ripstop polyester with DWR made without PFAS (bluepass certified)
Zipper Location	Left
Insulation Type	Synthetic
Fill	100% recycled polyester
Fill Weight	Short: 1 lb. 12.4 oz. Short Wide: 1 lb. 15.1 oz. Medium: 1 lb. 14.7 oz. Medium Wide: 2 lbs. 1.2 oz. Long: 2 lbs. 0.7 oz. Long Wide: 2 lbs. 3.8 oz.
Sleeping Capacity	1-person
Lining	100% polyester with DWR made without PFAS
Sleeping Bag Shape	Mummy
Fits Up To (in.)	Short: 66 inches Short Wide: 66 inches Medium: 72 inches Medium Wide: 72 inches Long: 78 inches Long Wide: 78 inches
Shoulder Girth (in.)	Short: 61.5 inches Short Wide: 69 inches Medium: 62 inches Medium Wide: 69 inches Long: 63 inches Long Wide: 70 inches
Hip Girth (in.)	Short: 53 inches Short Wide: 61.6 inches Medium: 54 inches Medium Wide: 62.5 inches Long: 55 inches Long Wide: 63.5 inches
Stuff Sack Volume	Short: 7.8 liters Short Wide: 10.2 liters Medium: 10.2 liters Medium Wide: 10.2 liters Long: 10.2 liters Long Wide: 12.6 liters
Compressed Volume	Short: 7.3 liters Short Wide: 8 liters Medium: 8 liters Medium Wide: 9.1 liters Long: 8.5 liters Long Wide: 10.3 liters
Gender	Unisex
Sustainability	Contains bluepass certified material, Contains recycled materials, From a Climate Label Certified brand

Highlights

• Inclusive sizing lets you find your best fit based on body shape and sleeping preferences
• Comfortable, "light-but-not-tight" mummy fit balances room to move with lightweight compressibility
• ISO Tested Lower Limit of 20°F ensures a warm, comfortable experience even in cooler weather
• 100% recycled polyester shell fabric with 100% recycled synthetic fill that keeps insulating even in damp conditions
• Shingled construction on top of the bag combines with layered bottom to provide trustworthy warmth at reduced bulk and weight
• Face muffler and full draft tube provide even more protection against the cold
• Contoured hood fits more naturally to your head, and it's sized to cradle most backpacking pillows
• Differentiated drawcords—1 round, 1 flat—on the hood and neck allow you to make adjustments easily, even in the dark
• Trapezoidal footbox provides room to move feet while keeping them cozy and warm
• Snag-resistant zipper with locking slider allows for footbox venting
• Interior stash pocket keeps your phone or headlamp handy
• Included stuff sack is optimized to fit in lower compartment of the REI Co-op Trailmade 60 pack
• Shell and lining both have a durable water repellent (DWR) finish made without PFAS to help moisture bead up on the surface
• Contains bluepass certified material
• REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world

Videos

Materials & care

Hand-wash or machine wash warm, gentle cycle in front-load washer only; do not bleach; rinse thoroughly; do not wring; air dry or tumble dry low; do not iron or dry clean

Size chart

Do I really need a backpacking-specific bag?

Yes. Compared to camping-specific versions, these bags are lighter, pack down smaller and are more efficient at keeping you warm.

Sleeping bag weight

Insulation type and bag shape affect weight the most. Always consider bags of a similar temperature rating when comparing weight.

Sleeping bag fit

Sleeping bags come in regular, long, wide and short sizes (or a mix of the two, like long-wide). Review the bag's size specs for the best fit.

Sleeping bag features

Draft-blocking details, a snug-fitting hood, extra zippers and even a stash pocket can add durability, warmth and function.

Better gear is built together. From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.