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Men's Lightweight Long Underwear - Tops

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Patagonia Capilene 1 Crew - Men's

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.

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Available Sizes:XS, S, M, L, XL, XXL
Price:
$38.00
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Burton AK Silkweight Top - Men's

Burton AK Silkweight Top - Men's

The Burton Men's AK Long-Sleeve Silkweight Top is as comfortable as the silk PJs your mom got you for Christmas when you were 12. Except this baselayer wicks moisture, resists odor, provides warmth, and lacks the fluffy bunny print.

Available Sizes:S, M, L, XL
Price:
$54.95
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Arc'teryx Rho SL Crew Neck Shirt - Long-Sleeve - Men's

Arc'teryx Rho SL Crew Neck Shirt - Long-Sleeve - 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.

Available Sizes:L, XL, XXL
Price:
$64.95
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Marmot Lightweight Zip Neck Shirt - Long-Sleeve - Men's

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.

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Available Sizes:S, M, L, XL, XXL
Price:
$41.95
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The North Face XTC Lightweight 1/4 Zip Top - Men's

The North Face XTC Lightweight 1/4 Zip Top - Men's

Slip on The North Face XTC Lightweight ¼ Zip shirt before a fall trail run, or use it as your base layer in the winter. Either way, this performance shirt's bamboo charcoal technology wicks moisture, fights odor, and provides UPF 50+ sun protection.

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Available Sizes:S, M, L, XL, XXL
Price:
$41.95
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Mountain Hardwear Advance Lightweight Crew - 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.

Available Sizes:S, M, L, XL, XXL
Price:
$44.95
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Under Armour Base 1.0 Crew Top - Long-Sleeve - Men's

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.

Available Sizes:S, M, L, XL, XXL
Price:
$39.95
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Backcountry.com Merino Zip Tee - Long-Sleeve - Men's

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

We made our Backcountry.com Men's 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 in complete comfort.

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Available Sizes:L, XL
Price:
$69.95
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Icebreaker Atlas Bodyfit 150 Top - Men's

Icebreaker Atlas Bodyfit 150 Top - Men's

Don't let the weight of the world get you down—pull on your slim-fitting Icebreaker Men's BodyFit150 Atlas Short-Sleeve T-Shirt and go trail running or rock climbing.

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Available Sizes:S, M, L, XL, XXL
Price:
$44.95
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Icebreaker BodyFit200 Oasis Crew - Men's

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.

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Available Sizes:S, M, L, XL, XXL
Price:
$64.95
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Arc'teryx Rho LTW Zip Top - Men's

Arc'teryx Rho LTW Zip Top - Men's

The Arc'teryx Men's Rho LTW Zip Top is a great base layer to wear for long winter days in the backcountry.

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Available Sizes:S, M, L, XL, XXL
Price:
$98.95
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Icebreaker BodyFit150 Atlas Top - Men's

Icebreaker BodyFit150 Atlas Top - 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.

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Available Sizes:S, M, L, XL, XXL
Price:
$59.95
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Arc'teryx Rho LT Zip - Men's

Arc'teryx Rho LT Zip - Men's

The Arc'teryx Men's Rho LT Zip Neck Top is an ideal foundation for backcountry travelers.

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Available Sizes:S, M, L, XL, XXL
Price:
$98.95
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686 Direct Layer Long Underwear Top - Men's

686 Direct Layer Long Underwear Top - Men's

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

Available Sizes:S, M, L, XL
Price:
$60.00
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Helly Hansen Crew Shirt - Long-Sleeve - Men's

Helly Hansen Crew Shirt - Long-Sleeve - Men's

Wear the Helly Hansen Men's Crew Long-Sleeve T-Shirt as a base layer when you skin up a ridge for turns or alone for a trail run in cold weather.

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Available Sizes:S, M, L, XL, XXL
Price:
$35.95
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The North Face XTC Lightweight Crew - Men's

The North Face XTC Lightweight Crew - Men's

Tired of your base layers restricting your movement? The North Face Men's XTC Lightweight Crew has underarm gussets for a full range of motion. This long-sleeve shirt dries quickly and resists odor.

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Available Sizes:S, M, L, XL, XXL
Price:
$37.95
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Mountain Hardwear Lightweight Power Stretch Crew - Long-Sleeve - Men's

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.

Available Sizes:S, M, L, XL, XXL
Price:
$54.95
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Mountain Hardwear Advance Lightweight Zip T - Men's

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.

Available Sizes:S, M, L, XL, XXL
Price:
$49.95
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Mountain Hardwear Lightweight Power Stretch Zip T - Men's

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.

Available Sizes:S, M, L, XL, XXL
Price:
$64.95
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SmartWool Lightweight Zip T-Shirt - Long-Sleeve - Men's

SmartWool Lightweight Zip T-Shirt - Long-Sleeve - Men's

Wear the SmartWool Men's Lightweight Zip-T long-sleeve shirt for cool-weather aerobic activities or as a next-to-skin base layer.

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Available Sizes:S, M, L, XL, XXL
Price:
$74.95
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Ibex Woolies Crew Long-Sleeve Shirt - Men's

Ibex Woolies Crew Long-Sleeve Shirt - 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.

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Available Sizes:S, M, L, XL
Price:
$64.95
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SmartWool Microweight Zip T-Shirt - Long-Sleeve - Men's

SmartWool Microweight Zip T-Shirt - Long-Sleeve - Men's

Wear the SmartWool Men's Midweight Zip-T for stop-and-go aerobic activities or as a warm base layer.

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Available Sizes:S, L, XL, XXL
Price:
$69.95
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Ibex Woolies Half-Zip T Neck Shirt - Long-Sleeve - Men's

Ibex Woolies Half-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.

Available Sizes:S, M, L, XL
Price:
$68.95
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DAKINE Badlands V-Neck Top - Long-Sleeve - Men's

DAKINE Badlands V-Neck Top - Long-Sleeve - Men's

Layer the DAKINE Men’s Badlands V-Neck Long-Sleeve Top under your kit, and shred all day in comfort. This super-lightweight base layer wicks excess moisture away from your skin, and fights odors so you don’t get ignored in the tram.

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Available Sizes:S, M, L, XL
Price:
$34.95
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DAKINE Apex Crew Top - Long-Sleeve - Men's

DAKINE Apex Crew Top - Long-Sleeve - Men's

When you wear the DAKINE Apex Long-Sleeve Crew Top your base layer is as stylin’ as your outerwear.

Available Sizes:S, M, L, XL
Price:
$36.95
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Columbia Steens Mountain Light Weight Crew - Long-Sleeve - Men's

Columbia Steens Mountain Light Weight Crew - Long-Sleeve - Men's

The Columbia Men's Steens Mountain Light Weight Long-Sleeve Crew provides just the right amount of insulation for spring hikes, fall runs, and chilly summer camping trips.

Available Sizes:S, L, XL, XXL
Price:
$19.95
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Mountain Hardwear Advance Lightweight Crew Shirt - Short-Sleeve - Men's

Mountain Hardwear Advance Lightweight Crew Shirt - Short-Sleeve - 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.

Available Sizes:S, L, XL, XXL
Price:
$39.95
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Helly Hansen Charger Half Zip T-Shirt - Long-Sleeve - Men's

Helly Hansen Charger Half Zip T-Shirt - Long-Sleeve - Men's

The versatile Helly Hansen Men's Charger Half-Zip Long-Sleeve T-Shirt works alone or as a base layer for high-intensity sports year round.

Available Sizes:S, M, L, XL, XXL
Price:
$49.95
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eesa Black Box Long Underwear Top - Men's

eesa Black Box Long Underwear Top - Men's

Pull on the eesa Men’s Black Box Long Underwear Top on those frozen tundra, hurts-to-breathe days and head out on the mountain while everyone else hides inside.

Available Sizes:XL
Price:
$29.95
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686 Cholo Long Underwear Top - Men's

686 Cholo Long Underwear Top - Men's

Yo homes, check the Cholo Top Layer from 686—it’s muy caliente.

Available Sizes:L, XL
Price:
$50.00
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I/O Biocompatibles Contact Crew Long-Sleeve T-Shirt - Men's

I/O Biocompatibles Contact Crew Long-Sleeve T-Shirt - Men's

Rub the sleep out of your eyes, pull the merino wool I/O Biocompatibles Men's Contact LS Crew Shirt over your head, and take off for an all-day big wall climb or a late breakfast with last night's party crew.

Available Sizes:S, M
Price:
$64.95
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I/O Biocompatibles Contact Ribbed Crew T-Shirt - Men's

I/O Biocompatibles Contact Ribbed Crew T-Shirt - Men's

The close-fitting I/O Biocompatibles Men's Contact Euro Ribbed T-Shirt takes pole position among your layering pieces thanks to I/O's oh-so-soft merino wool. Take this t-shirt for a run or a climb—you'll become a merino believer.

Available Sizes:S, L
Price:
$59.95
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Outdoor Research Sequence Zip Tee - Men's

Outdoor Research Sequence Zip Tee - Men's

Outdoor Research combines the technical performance of wool and polyester with the Men's Sequence Zip Tee.

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Available Sizes:S, M, L, XL, XXL
Price:
$41.95
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Marmot Lightweight Crew - Long-Sleeve - Men's

Marmot Lightweight Crew - Long-Sleeve - 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.

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Available Sizes:S, M, L, XL, XXL
Price:
$38.95
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SmartWool Microweight Crew Shirt - Long-Sleeve - Men's

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

Wear the SmartWool Men's Microweight Long-Sleeve Crew Shirt for cool- or warm-weather aerobic activities or as a next-to-skin base layer.

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Available Sizes:S, XXL
ON SALE:
$47.96 (20% off)
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Mountain Hardwear Extend Featherweight Zip Tee Long-Sleeve - Men's

Mountain Hardwear Extend Featherweight Zip Tee Long-Sleeve - Men's

This year when you're looking down a line stacked with cliff bands, at least you'll know you're not shaking from being cold. The Mountain Hardwear Men's eXtend Featherweight Zip Tee is a lightweight and comfortable base layer made to keep you dry.

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Available Sizes:S
ON SALE:
$36.71 (25% off)
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Merrell Merino Long-Sleeved Crew Shirt - Men's

Merrell Merino Long-Sleeved Crew Shirt - Men's

If you have yet to enjoy the benefits of merino, the Merrell Men's Merino Long-Sleeve Shirt is a great place to start. This highly effective insulator feels soft and comfortable as a layer or a solo piece.

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Available Sizes:S
ON SALE:
$45.47 (30% off)
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Sherpa Adventure Gear Baans Tech 1/4 Zip Top - Long-Sleeve - Men's

Sherpa Adventure Gear Baans Tech 1/4 Zip Top - Long-Sleeve - Men's

Sherpa Adventure Gear added bamboo charcoal to the Men's Baans Tech ¼-Zip Top because it wicks sweat quickly, and it's an antimicrobial.

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Available Sizes:S
ON SALE:
$33.71 (25% off)
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