The North Face Velocitee 1/4 Zip Shirt - Long-Sleeve - Men's

The North Face Men’s Velocitee ¼ Zip Shirt makes the ideal baselayer or mid layer for high-output sports like skiing, rock climbing, or trail running.

Icebreaker Beast Argon Crewe - Long-Sleeve - Men's

Throw on the Icebreaker Men’s Beast Argon Crewe T-Shirt before you head out for a cool-weather run or bike, or layer it under your shell for your next climb or trek.

Icebreaker GT260 Quantum 1/4-Zip Shirt - Long-Sleeve - Men's

Things can get really stinky when you sweat all day on the ski hill or the alpine climb. The Icebreaker GT260 Quantum ¼-Zip naturally blocks odor.

Mountain Hardwear Butter-Man 1/2 Zip Top - Long-Sleeve - Men's

Instead of slathering yourself in butter to become Butter Man, just pull on the Mountain Hardwear Butter-Man ½-Zip Top and enjoy its comfortable flatlock seams, moisture-wicking fabric, and UPF 50 protection.

Sessions Diffusion d3o Shirt - Long-Sleeve - Men's

If you’ve ever skidded out a landing on ice, you’ll appreciate the built-in protection of the Session Diffusion d3o Shirt.

Carhartt Work-Dry T-Shirt - Long-Sleeve - Men's

The Carhartt Men's Work-Dry T-Shirt wicks away sweat so you can work comfortably. Your co-workers will find your fresh appearance and fresh smell (thanks to an antimicrobial treatment) quite … well, refreshing.

Spyder Winterskyn X-Static Shirt - Long-Sleeve - Men's

You might not be one to have an incredibly long and specific coffee-drink order (half-soy, two-pump vanilla, extra foamy hotness), but you do think it makes sense to wear a ski-specific baselayer. The Spyder Winterskyn X-Static Shirt, for example.

The North Face Fusion Crew Top - Long-Sleeve - Men's

The North Face uses a seamless engineering process in its Men’s Fusion Crew Top so you can experience body-mapped mesh venting without excess seams.

prAna Derringer Shirt - Long-Sleeve - Men's

Pull on the prAna Men's Derringer Performance Shirt and smack cold weather in the face.

prAna Vector Shirt - Long-Sleeve - Men's

You sweated a lot on that fall hike, but your prAna Vector Shirt doesn't smell as bad as you'd expect.

prAna Aftershock T-Shirt - Long-Sleeve - Men's

You just redpointed your nemesis, and your arms are so pumped that you can barely undo your knot.

Sugoi Carbon Zip Shirt - Long-Sleeve - Men's

The highly technical Sugoi Carbon Zip Long-Sleeve Shirt manages moisture when served heavy doses of intense riding.

Under Armour Wylie Shirt - Long-Sleeve - Men's

Get your clothes to work hard with you. Aside from a comfortable, loose fit, the Under Armour Wylie Shirt uses patented technology to keep you from overheating like a VW bus on a July trip through Moab.

Swix Polaris Turtle Neck - Men's

A lot of unseemly sweating takes place under the pits, which is why Swix made the Men’s Polaris Turtle Neck mid-layer with mesh underarms for extra ventilation.

Icebreaker GT200 Chase 1/4-Zip Shirt - Long-Sleeve - Men's

Soft and never scratchy, Icebreaker's fine New Zealand merino wool insulates you against the elements--and the Men's Long-Sleeve GT200 Chase 1/4-Zip Shirt does precisely this.

KUHL Kore 1/4-Zip Shirt - Long-Sleeve - Men's

Cloudveil Run Don't Walk 1/2-Zip Shirt- Long-Sleeve - Men's

From a pre-work trail run to a pow day spend playing hooky, the Cloudveil Men’s Run Don’t Walk ½-Zip Shirt makes an ideal second layer.

Salomon Motomesh Shirt - Long-Sleeve - Men's

Need a mid-weight shirt that isn’t the skin-tight emo style? Pull the Salomon Men’s Motomesh Long-Sleeve Shirt over your head and experience warmth in a slightly loose fit.

Sugoi MidZero Zip Neck Shirt - Long-Sleeve - Men's

Sugoi put so much effort into developing the Men's MidZero Long-Sleeve Zip-Neck Shirt that even the seams have been designed to facilitate the movement of trail running without any rub.

Icebreaker Beast Argon V-Neck T-Shirt - Long-Sleeve - Men's

When the city life starts to weigh you down, throw the Icebreaker Men’s Beast Argon V-Neck T-shirt under your favorite shell and get out of town. This lightweight and slim-fitting top fits comfortably under your jacket.

Sugoi Wallaroo 290 Full-Zip Shirt - Long-Sleeve - Men's

If virtues like mobility, durability, breathability, and natural resources appeal to your jersey tastes, checkout Sugoi’s Wallaroo 290 Full-Zip.

X-Bionic Energizer Shirt - Long-Sleeve - Men's

Your training is technical, so why shouldn't your clothes be? Wear the X-Bionic Mid Compression X-Shirt for a more comfortable session.

Icebreaker Icebreaker GT220 Quantum Zip Shirt - Long-Sleeve - Men's

The Icebreaker Men’s GT220 Quantum Zip Long-Sleeve Shirt provides comfortable, friction-free insulation in a low profile and lightweight package.

Kavu Tofino Shirt - Long-Sleeve - Men's

Under a jacket during winter evening pub crawls or alone during a fall bouldering session, the super soft Kavu Men's Fleece Pullover better than make-up sex.

Spyder Mock Dry W.E.B. Midweight Crew - Long-Sleeve - Men's

The Mock Dry W.E.B. Midweight Crew doesn’t have a mock turtleneck. It has Spyder technology instead.

Marmot Ramble 1/2 Zip Shirt - Long-Sleeve - Men's

Who knew that sustainable materials could create a shirt as functional as the Marmot Men’s Ramble Shirt?

Sugoi Speedster 2 Zip Hooded Shirt - Men's

Mountain Hardwear Belay T-Shirt - Long-Sleeve - Men's

Wear the Mountain Hardwear Men's Belay T-Shirt Stay and stay unchafed and comfortable while your partner pulls himself up that 511b.

Ex Officio ExO Dri Long-Sleeve Crew - Men's

Put on the Ex Officio Men's ExO Dri Long-Sleeve Crew and stretch out in the passenger seat while your buddy takes the next driving leg. Ex Officio bends polyester with a little cotton into an open weave so the shirt will keep you comfy and wrinkle free while you're on the road.

GoLite DriMove Shirt - Long-Sleeve - Men's

The GoLite DriMove Long Sleeve Top lets you get your spring runs or hikes in without catching a chill.

Sugoi Ready Shirt - Long-Sleeve - Men's

Pull on the Sugoi Men's Ready Long-Sleeve T-Shirt, and go running or hiking in warm or cool conditions.

SmartWool Lightweight Crew - Long-Sleeve - Men's

Wear your versatile SmartWool Men's Lightweight Crew Long-Sleeve T-Shirt as a base layer or alone for year-round comfort outdoors.