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.

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.

Patagonia Active Classic Boxer - Men's

Stuff your carry-on with a couple pairs of Patagonia Men's Active Classic Boxers, and you're ready for a trip anywhere.

Patagonia Active Sport Boxer Brief - Men's

The Patagonia Men's Active Sport Boxer Briefs should be the first step of your layering system when you go skiing, hiking, or climbing.

Patagonia Capilene 3 Crew - Long-Sleeve - Men's

The Patagonia Men's Capilene 3 Long-Sleeve Crew features a dense honeycomb polyester fabric that feels soft on your skin, insulates you, and provides low-friction comfort with other layers.

Icebreaker BodyFit260 Crew - Long-Sleeve - Men's

The Icebreaker Men's 2-Tone Long-Sleeve BodyFit260 Crew offers some much-needed style in base layer fashion, not to mention it's made of 100% Merino, the best natural fiber for temperature regulation in the world.

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.

Icebreaker BodyFit150 Boxer w/Fly Brief - Men's

Wool boxer briefs? That's right. The Icebreaker Men's BodyFit150 Boxer Brief gives you all the benefits of merino wool minus the itch.

Patagonia Active Boxer Brief - Men's

Patagonia reduces relative humidity in your shorts with the Men's Active Boxer Brief. These boxer briefs feature wicking Capilene fabric.

Arc'teryx Accelero Pullover Top - Men's

The Arc'teryx Men's Accelero Pullover ½-Zip Lightweight Top's stretch polyester material moves with you as you ski, climb, hike, or run.

Icebreaker BodyFit260 Tech Top - Long-Sleeve - Men's

The Icebreaker Men's BodyFit260 Tech Top features super high quality New Zealand merino wool.

Under Armour Base 2.0 Crew Top - Long-Sleeve - Men's

The Under Armour Men's Base 2.0 Midweight Long Underwear Top keeps you warm by quickly wicking moisture away from your body and gives you a tailored fit that's not too tight.

686 Direct Base Layer Top - Men's

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

Forum T-Neck Top - Men's

Forum Body Bag One-Piece Baselayer - Men's

The Forum Men's Body Bag One-Piece Baselayer brings out your inner super hero while keeping you nice and warm.

The North Face Stretch Softwool Top - Long-Sleeve - Men's

When you’re hunkered down in your tent for a week at a time, The North Face Men’s Stretch Softwool Top’s odor-fighting merino wool keeps gnarly odors at bay.

Ibex D-Lux Boxer - Men's

Put on the Ibex Men's D-Lux Boxer and find out what you've been missing. Lightweight New Zealand merino wool sinks you into a sea of softness, and Ibex's relaxed fit gives you plenty of room to move around.

The North Face Stretch Softwool 1/4-Zip Top - Men's

You can’t very well bring a suitcase on a month-long expedition, so The North Face Men’s Stretch Softwool ¼-Zip Top not only wicks moisture and dries in a flash, but it helps fight gnarly odors during extended use.

Airblaster Merino Wool Ninja Suit - Men's

Topple tyrannical tyrannosaurs in the Airblaster Men’s Merino Wool Ninja Suit. Well, you may not be able to find any dinosaurs to knock over but you can sure keep warm while you endlessly search for them.

Marmot Midweight Zip Neck Top - Long-Sleeve - Men's

The Marmot Men's Midweight Zip long sleeve shirt covers you in a shaped fit that's easy to layer without accumulating bulk, and the half neck zip dumps heat when the temps rise.

Burton AK Select Top - Men's

You have definitely never seen a base layer that looks like the Burton Men’s AK Select Top.

SmartWool Microweight Boxer Brief - Men's

Wool in the springtime? Yup, the Smartwool Men's Microweight Boxer is 100% merino wool. It might also be the most versatile pair of skivvies you'll ever have the privilege of pulling over your cheeks.

DAKINE 3/4 Long Underwear Bottom - Men's

Base layer pants that are too long will bunch up in your boots and cut off circulation to your feet. The DAKINE ¾ Pant picks up where your snowboarding socks leave off.

Burton Shant Pant - 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.

Outdoor Research Sequence Zip T Pullover - Men's

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

Icebreaker Beast Boxer Brief w/Fly - Men's

Now you can soothe the savage beast with Icebreaker’s Beast Boxer Brief with fly.

Helly Hansen Odin Top - Men's

Miami muscle shirt or super-tech long-sleeve top? The innovative construction of the Helly Hansen Men's Odin Baselayer High Neck assures the latter.

The North Face TKA 100 Glacier 1/4 Zip Fleece Pullover - Men's

The North Face TKA 100 Glacier ¼ zip is a soft microfleece pullover perfect for layering or just bumming around on a crisp spring day.

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.

Under Armour Boxer Short - Men's

The Under Armour Men's Boxer Short keeps you cool and comfortable at work and during your workout.

Under Armour Boxer Jock - Men's

Stay cool and secure right down to your skivvies when you wear the Under Armour Men's Boxer Jock. These boxer briefs give you a snug compression fit for support that won't hinder athletic range of motion.

Ex Officio Give-N-Go Boxer Brief - Men's

The Ex Officio Men's Give-N-Go Boxer Brief aren't your typical pair of undies. These breathable boxers air dry in a few hours, wick sweat, and fight odor.

Ex Officio Give-N-Go Brief - Men's

Did you forget to pack underwear? Nope, you’re wearing the Ex Officio Men’s Give-N-Go Brief and you only need one pair.

Ex Officio Give-N-Go Boxer - Men's

The Ex Officio Men's Give-N-Go Boxer will make all those cotton jobbies in your top drawer obsolete. Whether you're on vacation or out for a hike, this travel boxer wicks sweat, stretches, and fights odor for a new level of comfort and performance.

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.

Patagonia Capilene 2 Crew - Long-Sleeve - Men's

Wear the lightweight Patagonia Men's Capilene 2 Crew top alone or as a base layer when you hike, backpack, or cross country ski. Patagonia made this crew top with an open knit for maximum breathability and wicking.

Patagonia Capilene 2 Bottom - Men's

Start your layering with the Patagonia Men's Capilene 2 Bottoms. Patagonia made these long underwear bottoms with knit Capilene for maximum breathability.

Under Armour Short Boxer Jock - Men's

Imagine how good a breathable mesh crotch panel in your boxers would feel when you're sweating bullets on runs, hikes, and workouts.