The men's Mountain Hardwear Air Mesh Half-Zip pullover may look unassuming, but once you have it on, you won't need anything else. Its active mesh fabric keeps you comfortable in a variety of temps.

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A single layer can have a bigger impact than you think. The men's Mountain Hardwear Air Mesh long-sleeve crew top may look unassuming, but once you have it on, you won't need anything else.

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For marathon belays in the blazing sun, the Black Diamond Alpenglow hoodie offers a break from the rays with sun-protective fabric and BD.cool mineral-based, in-fiber cooling technology.

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Offering coverage on desert multi-pitches, high-alpine approaches and hot crag sessions, the men's Black Diamond Alpenglow long-sleeve crew shirt fends off sun, sweat and overheating.

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Soft and comfy enough for casual wear yet boasting moisture-wicking, sun-protective fabric for outdoor activities, the men's prAna Altitude Tracker Crew II top is ready for your everyday adventures.

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Lined in the torso with a comfortable, high-pile sherpa wool fleece, the men's Smartwool Anchor Line Sherpa shirt jacket is ready for those crisp, early fall days spent outside.

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Pull on the Marmot Anderson Lightweight flannel for fall hikes or brewery bike rides. The brushed fabric blends soft cotton and recycled polyester to help manage moisture by wicking and drying fast.

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The Flylow Anderson shirt helps minimize your wardrobe. You don't need 10 plaid button-ups—just this one, made with stretchy, breathable, quick-dry fabric you can work and ride without a change.

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No rash, no burns, no problems. The men's Quiksilver Angler Hooded 2 long-sleeve surf T-shirt shields you from sun and sand burns with a recycled surf fabric and built-in UPF 50 sun protection.

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A must for long morning walks and cozy winter weekends, The North Face Arroyo heavyweight flannel shirt feels great, and its organically grown cotton also makes you feel great.

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With classic heavyweight style and a hood to match, the prAna Asgard hooded flannel shirt for men takes the chill out of cool days and layers nicely over a classic T-shirt.

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A go-to for urban outings, far-flung travels and trail adventures, this men's Outdoor Research Astroman long-sleeve sun shirt keeps you moving with easy stretch and UPF 50+ sun protection.

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Sunny crag days get a little bit better in this button-up. With built-in UPF 50+ sun protection, the men's Outdoor Research Astroman sun shirt protects you from harsh rays while on the wall.

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There's a reason it's a bestseller. The men's Outdoor Research Astroman technical sun shirt delivers UPF 50+ protection and ultimate stretch for all your trail and urban outings and travel adventures.

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