With a relaxed fit, flatlock seams to help prevent chafing, and 100% ultrasoft, responsibly sourced merino wool, the women's Smartwool Thermal Merino drape-neck hoodie is a fan favorite.

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A game changer and wardrobe maker, the women's Smartwool Thermal Merino high-neck top is made with 100% merino wool, so it's warm, cozy, breathable and odor-resistant.

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The trusty flannel gets better and looks good doing it. The women's Royal Robbins Thermotech Flannel shirt mixes classic style and comfort with smart features and technical fabrics for your comfort.

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Made to go anywhere, the Royal Robbins Thermotech Ren Plaid shirt combines classic style and comfort with smart features and technical fabrics to keep you happy whether you're on the trail or at work.

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Great for laid-back camping weekends or summer BBQs with friends, the men's prAna Tinline shirt is made with a comfortable cotton blend and a subtle print to elevate your casual style.

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Active adventurers will love the men's Swix Tista crew—it feels and fits great, with plenty of stretch, warmth and great rebound to ensure an awesome fit. Wear it as a mid layer or on its own.

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Active adventurers will love the men's Swix Tista half-zip—it feels and fits great, with plenty of stretch, warmth and great rebound to ensure an awesome fit. Wear it as a mid layer or on its own.

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Breezy and ready for summer outings, the women's Mountain Hardwear Tomomi T-shirt will quickly become a favorite. Its organically grown cotton fabric keeps you cool and comfortable.

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No matter how hot things get, the Vuori Tradewind Performance T- shirt will keep you looking and feeling cool during any sport training or outdoor activity.

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However hot your workout gets, the men's Vuori Tradewind Performance T-shirt maintains your coolness in a flatlock-constructed perforated knit that wicks moisture and breathes with ease.

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Light and loose for those chilly off-road runs, the men's Nike Trail hoodie keeps you covered and comfortable in changing conditions—and features a handy watch window to help you keep track of time.

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All the trail gear you need since 1938—show your love while you're out and about in the short-sleeve REI Co-op Trail Supplies T-shirt.

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All the trail gear you need since 1938—now they can show their love while out and about in the kids' short-sleeve REI Co-op Trail Supplies T-shirt.

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Let the trail be your guide in the men's Outdoor Afro + REI Co-op Trail T-shirt—made to wick sweat, catch a breeze and find some shade with UPF 30 sun protection.

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