Start layering your littles with the kids' warm, breathable REI Co-op Lightweight Crew Long Underwear top. It features a made-to-move design and all of the comfy for a day of play.

Underwear TopsBase Layer Tops

Layer your little one with the REI Co-op lightweight long underwear bottoms for infants and toddlers. Designed for warmth, these bottoms are easy to pull on and absorb moisture as it comes.

Underwear BottomsBase Layer Bottoms

Layer your hiking pal with the REI Co-op lightweight long underwear bottoms for kids. Designed for warmth, these bottoms are easy to pull on and wick moisture for comfort.

Underwear BottomsBase Layer Bottoms

The REI Co-op lightweight stuff sack provides a convenient way to protect your sleeping bag from moisture and abrasion. It can also be used to store and organize other gear.

SacksDrawcord Stuff Sacks

Like base layers for your hands, these breathable, stretchy REI Co-op liner gloves are designed to fit comfortably under other gloves or as a standalone when the weather starts to turn.

Gloves and MittensLiner Gloves

Stay hydrated, carry all the gear you need for a long singletrack day—and preserve your balance with help from the lumbar reservoir carry system of the 10 L REI Co-op Link hydration pack.

Hydration Packs and VestsHydration Backpacks

For those half-day climbing up, half-day screaming down rides, carry the gear and water you need—and stay balanced with help from the lumbar reservoir of the REI Co-op Link 15 L hydration pack.

Hydration Packs and VestsHydration Backpacks

Offering a bit of extra warmth for fall rides, the men's REI Co-op Link knickers also protect your legs from scraggly branches and yucca growing out into the trail.

Pants ParentCycling Pants

Sometimes you're riding like the wind, but also riding right into it. When that happens, unpack the protection of the breathable, stretchy, wind- and water-resistant men's REI Co-op Link wind vest.

VestsCycling Vests

Sometimes you're riding like the wind and sometimes you're riding right into it. When that happens, unpack the breathable, stretchy, wind- and water-resistant women's REI Co-op Link wind vest.

VestsCycling Vests

They may look too polite for backcountry, but feed them a little trail dust and the women's REI Co-op link double bike shorts turn into singletrack beasts—that still fit in at the lounge, post-ride.

ShortsCycling Shorts

Bikepacking or touring, keep your center of gravity low and your ride stable by loading the hefty stuff like food and a stove in the fully waterproof REI Co-op Link Frame bag.

On-Bike PacksBike Frame Bags

When you round a bend and see Sasquatch on the trail ahead, you want your camera stat. Keep the stuff you need quickly in the REI Co-op Link handlebar bag and you won't have to dig through a pannier.

On-Bike PacksHandlebar Bags

This is the way to roll to your local campground—or pedal for the horizon. The REI Co-op Link Handlebar Roll keeps light, bulky items like clothes, a sleeping bag or bivy dry and stable on the bike.

On-Bike PacksHandlebar Bags