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Men's Lightweight Long Underwear - Tops

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

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.

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Available Sizes: XL
ON SALE:
$55.97 (30% off)
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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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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: S, M, L, XL
Price:
$69.95
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Arc'teryx Rho Lightweight Zip Top - Men's

Arc'teryx Rho Lightweight 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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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, M, L, XL, XXL
Price:
$48.95
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Backcountry.com Merino Crew Shirt - Long-Sleeve - Men's

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.

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Available Sizes: S, M, L, XL
Price:
$59.95
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Marmot Lightweight Long-Sleeve Crew Shirt - Men's

Marmot Lightweight Long-Sleeve Crew Shirt - 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: M, L, XL, XXL
Price:
$59.95
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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, M, L, XL
Price:
$69.95
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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, XL, XXL
Price:
$74.95
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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.

Available Sizes: S, M, L, XL
ON SALE:
$33.71 (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.

Available Sizes: S, M, L, XL
ON SALE:
$45.47 (30% off)
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Ibex Woolies Zip T Long-Sleeve Shirt - Men's

Ibex Woolies Zip T Long-Sleeve Shirt - 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, XL
ON SALE:
$64.95 (25% off)
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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, L, XL
ON SALE:
$59.95 (25% off)
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Marmot Lightweight Long-Sleeve Zip Neck Shirt - Men's

Marmot Lightweight Long-Sleeve Zip Neck Shirt - 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
Price:
$41.95
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Patagonia Capilene 1 Crew - Long-Sleeve - Men's

Patagonia Capilene 1 Crew - Long-Sleeve - 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 Compression Crew - Long-Sleeve - Men's

Burton Compression Crew - Long-Sleeve - Men's

The close-fitting Burton Men's Long-Sleeve Compression Crew provides efficient insulation under your fleece, and it's so light you'll hardly know you're wearing it.

Available Sizes: S, M, L, XL
ON SALE:
$48.97 (30% off)
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Icebreaker BodyFit200 Oasis Crew - Long-Sleeve - Men's

Icebreaker BodyFit200 Oasis Crew - Long-Sleeve - 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:
$59.95
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I/O Biocompatibles Contact Zip T-Shirt - Men's

I/O Biocompatibles Contact Zip T-Shirt - Men's

The 100% merino wool I/O Biomechanics Men's Contact Zip T-Shirt keeps you cool, dry, and smelling like a rose no matter how long you sit out beneath those radio telescopes listening for communications of the third kind.

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Available Sizes: S
ON SALE:
$71.96 (10% off)
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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: XL
ON SALE:
$33.56 (20% off)
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