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French Poppy
French Poppy

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REI AirRail 1.5 Self-Inflating Sleeping Pad Video

The REI AirRail 1.5 Self-Inflating Sleeping Pad features a hybrid design that offers low weight, compressibility and ample sleeping comfort.


  • Hybrid design combines an insulated-foam center panel with large air tubes outside to keep you from rolling off; outer tubes are insulated with PrimaLoft® microfiber fill
  • Cross-cored foam insulation is lightweight, compressible and stable
  • Quick-closing, high-flow valves
  • Durable 75-denier polyester top has an embossed nonslip surface; 75-denier polyester bottom resists wear; all seams are welded
  • Tapered mummy shape reduces weight and packed size
  • R-value equals 4.2; most sleeping pads we sell range in R-value from 1.0 (minimally insulated) to 9.5 (highly insulated)
  • The REI AirRail 1.5 Self-Inflating Sleeping Pad comes with a stuff sack



Gear and clothing created with REI co-op members, the experts who work in our stores, and a wilderness spirit born in 1938.

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Best Use Backpacking
Sleeping Pad Type Self-inflating Pad
Sleeping Pad Shape Mummy
Insulation Type Open-cell Foam
R-Value 4.2
Stuff Sack Included Yes
Packed Size
7 x 9 inches
Long Wide
7.5 x 9 inches
6.5 x 9 inches
78 x 23 x 1.5 inches
Long Wide
78 x 25 x 1.5 inches
72 x 23 x 1.5 inches
1 lb. 11 oz. ounces
Long Wide
1 lb. 15 oz. ounces
1 lb. 10 oz. ounces
Gender Unisex
Four hikers wearing Traverse Series packs and clothing cross a grassy field

Better together: REI Traverse Series

Member stories from their time on the trail influenced innovations in our new fully featured backpacking gear & clothing that combines maximum comfort and optimal organization for a rewarding journey.

See more new REI gear

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We stand behind everything we sell. If you are not satisfied with your REI purchase, you can return it for a replacement or refund within one year of purchase.

REI's guarantee doesn't cover ordinary wear and tear or damage caused by improper use or accidents.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. See our limited warranty.

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At REI, we live and breathe the outdoors, and we're passionate about sharing our expertise with people of all skill levels. Whether you're new to the outdoors or a seasoned explorer, we'll take the time to understand your needs and help you find the right gear for you.

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*10% is typical but not guaranteed. Your refund is based on eligible purchases, which exclude REI gift cards, services, fees, REI Adventures trips, REI Garage, and discounted items. Learn more