Lightweight and long-lasting, the men's Ortovox 120 Cool Tec Fast Upward T-shirt has a self-cooling effect and robust construction to help you keep up the pace on mountain terrain.

hiking-shirts

Don't get slowed down at the crag! Comfortable, cool and quick-drying, the men's Ortovox 170 Cool Vertical T-shirt has a casual cut for optimum freedom of movement for those athletic moves.

t-shirts

All the trail gear you need for 85 years and counting—show your love while you're out and about in this short-sleeve REI Co-op 1938 graphic T-shirt, which celebrates the year REI Co-op was founded.

t-shirts

All the trail gear you need for 85 years and counting—now even your kiddo can celebrate the history of the co-op in this short-sleeve REI Co-op 1938 graphic T-shirt.

casual-shirts

Serving up heritage styling and warm-weather comfort, the men's Fjallraven 1960 Logo T-shirt is a lightweight, quick-drying staple for everyday adventures.

t-shirts

Styled like your favorite concert tee, the women's Parks Project 1963 National Parks Tour T-shirt celebrates the national parks that existed in 1963.

t-shirts

Soft, lightweight and made from organically grown cotton, this men's Patagonia 73 Skyline Regenerative Organic Pilot Cotton T-shirt is a tee you can feel extra-good about.

t-shirts

Made for intense workouts in cold conditions, the Craft ADV SubZ Wool long-sleeve T-shirt 2 blends wool for warmth with polyester for transporting moisture when you're working up a sweat.

running-shirts

At the beach, at camp, on a hike or in the virtual office, the Outdoor Research Aberdeen long-sleeve shirt is a comfortable, midweight layer that looks great and keeps you warm.

womens-casual-t-shirts

This convenient garment is made for trekking and outdoor life in the summer. Plus, the men's Fjallraven Abisko Hike shirt is super packable, so it's practical when space is limited.

button-up-shirts

An ideal first layer for any weather, the women's Fjallraven Abisko Wool shirt thermoregulates and breathes easy. Made with odor-resistant merino wool, it helps you feel fresh on multiday hikes.

t-shirts

From 5k to ultra, the men's RaidLight Activ Run Zip T-shirt is a great lightweight choice for all types of running and all distances.

running-shirts

The men's REI Co-op Active Pursuits half-zip shirt stretches four ways for easy mobility on the trail, and offers breathable warmth for comfortable lounging after your run.

hiking-shirts

Breathable warmth and 4-way stretch make the women's REI Co-op Active Pursuits insulated pullover a natural for cool-morning running—and whatever else comes next in your day.

running-shirts