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Not only does the Patagonia Men's Capilene 1 Crew make an excellent lightweight top for people getting after it in the mountains, it also uses 100% recycled fabrics to get the job done.
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.
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.
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.
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.
The warm, breathable Icebreakers Men’s BodyFit200 Oasis Crew eliminates stink amplification.
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.
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.
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.
It's an awesome pow day, and you don't want to have to hit the lodge just to take care of biz. Luckily you happen to be wearing the Icebreaker BodyFit200 Oasis Printed Crewe under your bright ski jacket.
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.
Harness the power of the coconut when you pull on the Marmot Men’s Lightweight Crew.
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.
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.
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.
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.
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.
Pull on the Under Armour Men's fitted Base 1.0 Crew Long Underwear Top for early spring runs.
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.
Hot, sweaty trail runs and summertime hikes just got more comfortable thanks to the Patagonia Men’s Merino 1 T-Shirt.
Toss all your pitted-out synthetic baselayer shirts and stock up on the Terramar Men’s Pioneer Silkweight Crew Top.
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.
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.
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.
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.
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.
The Icebreaker Men's BodyFit Mondo Zip Top—not to be confused with a turtle neck.