Patagonia Capilene 1 Crew - Men's

The Patagonia Men's Capilene 1 Long-Sleeve Crew is an ultralight, fast-wicking top for warm-weather trail runs or hikes.

Backcountry.com Merino Zip Tee - Long-Sleeve - Men's

We made our Backcountry.com Men's Merino Long-Sleeve Zip Tee with super-fine New Zealand Merino, flat-locked seams, and a ½ zip chest so you can tackle anything from a 5-day backpacking trip to a run around the neighborhood.

Arc'teryx Rho SL Crew - Men's

Arc'Teryx made the Rho SL Long-Sleeve Crewneck Shirt to be a versatile and lightweight shirt that works by itself in warm weather or as a baselayer in colder conditions.

Backcountry.com Merino Bliss Lightweight Long Underwear Top - Men's

With its soft, naturally odor-resistant 18-micron Merino wool knit and ½ neck zip, our Backcountry.com Men's Merino Bliss Lightweight Top covers you in functional comfort, minus the synthetic funk factor.

Forum T-Neck Top - Men's

You can’t help but put on a happy face when you wear the Forum T-Neck Top.

686 Direct Base Layer Top - Men's

Pull on the 686 Direct Top Layer as your defense against clammy, cold skin while you ride.

Marmot Lightweight Zip-Neck Shirt - Long-Sleeve - Men's

Layer with the moisture-wicking Marmot Men's Lightweight Long-Sleeve Zip Neck shirt on chilly days and bust open the neck zipper when you need to dump some serious heat.

Backcountry.com Merino Crew Shirt - Long-Sleeve - Men's

Uncompromising in both quality and form, our Backcountry.com Men's Merino Long-Sleeve Crew Shirt offers the superior moisture managing, naturally anti-odor, and comfort of super-fine New Zealand Merino at a price that might make you pee a little.

Stoic Merino Bliss Shirt - Long-Sleeve - Men's

With its soft, naturally odor-resistant 17.5-micron Merino wool knit and ½ neck zip, the Stoic Merino Bliss Shirt covers you in functional comfort, minus the synthetic funk factor.

Icebreaker BodyFit200 Oasis Crew - Men's

The Icebreakers Men's BodyFit200 Oasis Crew is a great all-around lightweight base layer made from the ultimate breathable insulation—Merino wool.

The North Face XTC Lightweight Crew Top - Long-Sleeve - Men's

Thanks to a polyester knit infused with bamboo carbon, The North Face Men’s XTC Lightweight Crew Top wicks moisture like crazy and resists funky odors during multi-day use.

Icebreaker BodyFit 150 Atlas Top - Long-Sleeve - Men's

Wear the Icebreaker Men's BodyFit150 Atlas T-Shirt for traveling the globe, going for a hike, or hitting up the local climbing gym for a quick bouldering session. This slim-fit, merino wool tee regulates your temperature and wicks sweat.

Burton Lightweight Crew - Men's

Layer the Burton Men’s Lightweight Crew under your puffy, shell, hoody, or fleece before you head out to charge the steeps this winter. DryRide Ultrawick fabric pulls moisture away from your skin.

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

The North Face Men’s XTC Lightweight ¼-Zip Long-Sleeve Shirt combines bamboo-infused polyester, flatlocked seams, and underarm gussets, to give you a highly breathable, and protective layer for cool-weather activity.

Stoic Merino Crew Shirt - Long-Sleeve - Men's

Forget your fears about itchy wool—the Stoic Merino Crew Shirt is a whole different beast. Employing 17.5-micron Merino wool from New Zealand, the Merino Crew Shirt ensures comfortable, dry days whether you're out for a mid-January dawn patrol or an autumn ride down the single track.

Mountain Hardwear Continuum Lightweight Crew - Long-Sleeve - Men's

Think of the Mountain Hardwear Men’s Continuum Lightweight Crew as your partner in crime for your many interests. This compatible base layer keeps you dry and comfortable whether you’re rock climbing in the summer or skiing in the winter.

Mountain Hardwear Advance Lightweight Zip T - Men's

Wear the Mountain Hardwear Men's Advance Lightweight Zip T for some serious wicking, quick-drying action. Treated with a natural substance called Chitosan, the Advance Zip T resists odors, fungus, and bacteria as well.

Mountain Hardwear Lightweight Power Stretch Crew - Long-Sleeve - Men's

Pull on the Mountain Hardwear Men’s Lightweight Power Stretch Crew under your shell when you take off for the mountains. Mountain Hardwear used a lightweight Polartech Power Stretch fabric that wicks moisture and dries quickly.

SmartWool Lightweight 1/4-Zip Top - Long-Sleeve - Men's

The Smartwool Men’s Lightweight ¼-Zip Top is like the caped crusader of the baselayer world—at any time it’s ready to wick moisture, dry in a flash, and naturally fight odors thanks to its soft, stretchy merino wool construction.

Patagonia Merino 2 Zip-Neck Top - Men's

Fall sending temps have arrived, which means it’s time to pull on the Patagonia Men’s Merino 2 Zip-Neck Top and get after that multi-pitch project that you and you buddy have been eyeing all summer.

DAKINE Mainframe Crew Long Underwear Top - Men's

Go to sleep in the DAKINE Mainframe Men’s Crew Long Underwear Top and you’ll have one less thing to put on when you wake up to go riding.

Marmot Lightweight Crew - Short-Sleeve - Men's

Harness the power of the coconut when you pull on the Marmot Men’s Lightweight Crew.

Dale of Norway Baselayer Zip-Neck Top - Men's

The Dale of Norway Baselayer Zip-Neck Top takes advantage of 200g merino wool to regulate your body temperature so you stay comfortable and dry when you’re getting after it this winter.

SmartWool Microweight 1/4-Zip Top - Long-Sleeve - Men's

Feel the smooth power of silkweight all day when you wear the SmartWool Microweight 1/4-Zip Top.

Mountain Hardwear Lightweight Power Stretch Zip T - Men's

The Mountain Hardwear Lightweight Power Stretch Zip T sports lightweight, moisture wicking Polartech Power Stretch fabric to give you a snug fit under your shell and keep you comfortable and dry when you sweat.

Mountain Hardwear Advance Lightweight Crew - Men's

Make the Mountain Hardwear Men’s Advance Lightweight Short-Sleeve Crew Shirt the first thing you put on for everything from a fall trail run to a day pillaging backcountry powder stashes.

Ibex Woolies Zip T-Neck Shirt - Long-Sleeve - Men's

Zip up the Ibex Men's Woolies Zip T-Neck Top to tackle the steep and deep and then keep it on for that après ski party with friends.

Patagonia Merino 1 T-Shirt - Short-Sleeve - Men's

Hot, sweaty trail runs and summertime hikes just got more comfortable thanks to the Patagonia Men’s Merino 1 T-Shirt.

Under Armour Base 1.0 Crew Top - Long-Sleeve - Men's

Pull on the Under Armour Men's fitted Base 1.0 Crew Long Underwear Top for early spring runs.

Patagonia Merino 1 Crew - Long-Sleeve - Men's

Whether it’s worn alone in warm climates or under three layers in plunging winter temps, the Patagonia Men’s Merino 1 Crew gives you the same moisture-wicking, quick-drying, odor-fighting powers.

SmartWool Microweight Crew Shirt - Long-Sleeve - Men's

I/O Bio Merino Contact Crew Shirt - Long-Sleeve - Men's

SmartWool Lightweight Crew Top - Men's

Ibex Woolies Zip T-Neck Stripe Top - Long-Sleeve - Men's

Say goodbye to the man-made synthetic fibers of your old base layer and say hello to the soft, moisture-wicking Ibex Men’s Woolies Zip T-Neck Stripe Long-Sleeve Top.

Ibex Woolies Crew - Long-Sleeve - Men's

Layer the Ibex Men Woolies Crew Long Sleeve Shirt under other layers in the winter, or wear it by itself—either way, this form fitting shirt regulates your temperature, wicks moisture, and fights funk.

Cloudveil Run Don't Walk Light Top - Men's

For deep-winter layering or powering through a fall trail run, nothing beats the lightweight moisture management of the Cloudveil Men’s Run Don’t Walk Light Top.

Icebreaker BodyFit200 Oasis Printed Crewe - Long-Sleeve - Men's

Mountain Hardwear Advance Lightweight Crew - Long-Sleeve-Men's

The Mountain Hardwear Men's Advance Lightweight Long-Sleeve Crew offers dry, light warmth when worn alone, or you can layer it under a vest or jacket for moisture management in colder weather.

Marmot Lightweight Crew - Men's

Whether used as a layering piece or worn alone, the anti-microbial Marmot Men's Lightweight Long-Sleeve Crew wicks moisture away from your skin when you work up a sweat.

Patagonia Capilene 1 Graphic Crew T-Shirt - Long-Sleeve - Men's

The Patagonia Men's Capilene 1 Band Brand Graphic Long-Sleeve T-Shirt combines casual looks with the technical abilities to go into the mountains.