Sweat happens. The women's REI Co-op Swiftland long-sleeve T-shirt handles it easily—with microventilated SwiftTex™ fabric that's so light and airy you won't even notice it's there.

Shirts ParentShirts

You can't make the day any cooler, but you can wear the women's REI Co-op Swiftland long-sleeve T-shirt—it cools you with microventilated SwiftTex™, a fabric so airy and light it's barely there.

Shirts ParentShirts

Forget the heat and focus on the fun. The women's REI Co-op Swiftland short-sleeve T-shirt is made with microventilated SwiftTex™ fabric that's so airy and cool you won't even notice it's there.

Shirts ParentShirts

You can't outrun heat, but you can run cool in the women's REI Co-op Swiftland short-sleeve T-shirt. It's made with microventilated SwiftTex™, a fabric so light and airy you barely know it's there.

Shirts ParentShirts

Break a sweat and keep your cool. The women's REI Co-op Swiftland tank top is made with new microventilated SwitftTex™ fabric that's so light and airy it's like wearing nothing at all.

Shirts ParentShirts

For afternoons pedaling in the city or up and down hills through the countryside, the women's Marmot Switchback long-sleeve shirt is made in a lightweight rib-knit fabric that has an extra-soft feel.

Shirts ParentShirts

A bit of a throwback to the summer camp days, the Marmot Switchback tank top is crafted from a blend of natural and synthetic fibers, which gives it a soft feel for hiking, climbing and daily wearing.

Shirts ParentTank Tops

Enjoy your day in comfort, however your move through the trees. Soft, breathable and moisture-wicking, the women's Arc'teryx Taema Crew shirt is a great pick for off-road runs and hikes.

Shirts ParentShirts

The advanced design and materials of the women's Arc'teryx Taema tank top combine for performance. Performance creates comfort, and comfort frees you to let go and step fully into adventure.

Shirts ParentTank Tops

Made to flow between workouts and life, the women's REI Co-op Take Your Time bra top features supersoft, sweat-wicking fabric and nonchafing seams.

Shirts ParentTank Tops

From downward dog mornings to walking the dog afternoons, the women's REI Co-op Take Your Time textured bra top's soft, stretch fabric and nonchafing seams help you go with the flow of the day.

Shirts ParentTank Tops

Built to handle bell-to-bell gym sessions, then take that fitness to the crag on the weekends—that's what the women's Black Diamond Talus tank top is all about.

Shirts ParentTank Tops

Made for speed, the On Tank-T running shirt is shaped to be sleek and airy, and it features a fast-drying, high-tech knit fabric that transports sweat quickly away from your skin.

Shirts ParentTank Tops

For the intensity that bike parks and freeride adventures provide, the women's Mons Royale Tarn T-shirt is fast wicking and offers increased durability thanks to its Merino Shift fabric.

Shirts ParentShirts