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Men's Baselayers & Underwear

92 Products

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  • Thin yet effective, Columbia's midweight baselayer is perfect for skiing or cold-weather hiking. A 1/2 zipper allows for easy venting, helping you avoid the hassle of shedding an entire layer.

    Our Price:
    $24.00
  • A year-round, next-to-skin baselayer made with 100% Merino Wool; designed for wear under your shell pants or alone as loungewear.

    Our Price:
    $70.00
  • A year-round, next-to-skin baselayer made with 100% Merino Wool; perfect for cool days when summer starts to turn into fall, and a heat-venting zipper keeps you cool when you warm up.

    Our Price:
    $85.00
  • The ultimate foundation for smart layering is the SmartWool boxer brief for men. It features a smooth elastic waistband and internal flatlock seams for exceptional smoothness and comfort.

    Our Price:
    $48.00
  • Smartwool's Microweight bottom has a great weight, sharp looking design and fits like a dream. The Men's Microweight Bottom takes the term long underwear to a whole other level.

    Our Price:
    $75.00
  • The perfect all around underwear is Smartwool's Lightweight Boxer Brief. Made from Merino wool, it packs all those excellent attributes you love in their socks. With a super cozy fit, you're going to fall in love.

    Our Price:
    $52.00
  • The perfect long underwear that will keep you warm when you need it the most. Just remember, these aren't your daddy's long john's

    Our Price:
    $95.00
  • Forget old boxer briefs that bunch up, wear out, or lose shape. The Original UA Boxerjock stretches, recovers, stays put, wicks sweat, keeps you cool, and kills odors.

    Our Price:
    $20.00
  • Designed with the team player in mind, this short sleeve T-shirt uses UA Tech fabric to provide cool, dry performance and superior comfort. On-field or off, get the performance you demand when you're at the height of activity.

    Our Price:
    $22.99
  • UA's fabric HeatGear wears like a second skin so you get the same powerful compression, plus extreme comfort for all-day wear. Designed with moisture management, you'll be sure to stay comfortable and cool throughout your activity.

    Our Price:
    $24.99
  • Stay comfortable and dry in a wide range of conditions in Patagonia's most versatile baselayer. Light and comfortable, the Cap 3 Zip Neck is ideal for everything from backpacking to winter sports.

    Our Price:
    $65.00
  • Stay comfortable and dry in cool to warm conditions in Patagonia's fastest drying and highly breathable baselayer with 20-UPF sun protection.

    Our Price:
    $49.00
  • This latest UA fabric wears like a second skin so you get the same powerful compression, plus extreme comfort for all-day wear. Designed to pull moisture away from the core, it ensures that you'll stay cool and comfortable.

    Our Price:
    $24.99
  • This latest UA fabric wears like a second skin so you get the same powerful compression, plus extreme comfort for all-day wear. Designed to pull moisture away from the core, it ensures that you'll stay cool and comfortable.

    Our Price:
    $29.99
  • Stay comfortable and dry in cool to warm conditions in Patagonia's fastest drying and highly breathable baselayer with 20-UPF sun protection.

    Our Price:
    $49.00
  • Stay comfortable and dry in cool to warm conditions in Patagonia's fastest drying and highly breathable baselayer with 20-UPF sun protection.

    Our Price:
    $55.00
  • UA's fabric HeatGear wears like a second skin so you get the same powerful compression, plus extreme comfort for all-day wear. Designed with moisture management, you'll be sure to stay comfortable and cool throughout your activity.

    Our Price:
    $29.99
  • Providing loads of comfort and taking you to the next level is the Sonic Fitted Short Sleeve Shirt from Under Armour. Lighter and designed with a sleek, softer feel that you can wear all day, the Sonic may have just become your new favorite wicking shirt.

    Our Price:
    $24.99
  • The Men's UA Tech Embossed T-Shirt is soon to become your new go-to in the gym and out on the trail. Created with moisture wicking fabric to keep you cool and comfortable, you'll reach for it every time you head out for activity.

    Our Price:
    $24.99
  • The Flyweight was created to wick away sweat and dry quickly, keeping athletes lighter and more comfortable. Being one of Under Armour's lightest shirts, the Flyweight is a hot weather essential for those who demand the most from their baselayers.

    Our Price:
    $29.99
  • The classic R1 Pullover is the ideal midlayer for the full spectrum of mountain endeavors. Made with Regulator grid fleece for outstanding stretch, breathability, compressibility and durability, the R1 is a true legend among backpackers.

    Our Price:
    $129.00
  • Designed with the team player in mind, this long sleeve T-shirt uses UA Tech fabric to provide cool, dry performance and superior comfort. On-field or off, get the performance you demand when you're at the height of activity.

    Our Price:
    $27.99
  • This latest UA fabric wears like a second skin so you get the same powerful compression, plus extreme comfort for all-day wear. Designed to pull moisture away from the core, it ensures that you'll stay cool and comfortable.

    Our Price:
    $34.99
  • This latest UA fabric wears like a second skin so you get the same powerful compression, plus extreme comfort for all-day wear. Designed to pull moisture away from the core, it ensures that you'll stay cool and comfortable.

    Our Price:
    $24.99
See Trekt Reviews at Bizrate.com
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