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Men's Baselayers & Underwear

184 Products

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  • The Incendo tight is a full length, moisture-wicking tight with articulated patterning for enhanced comfort and freedom of movement. Wear the Incendo for cold weather trail runs, snowshoeing and mountaineering.

    Arcteryx Men's Incendo Tight

    Our Price:
    $78.85
  • The Motus Crew is superb for everything from trail running to climbing to moderate day hikes. Made with Arc’s Phase SL fabric, it’s incredibly light and is made with antimicrobrial fibers that help keep bad smells at bay.

    Arcteryx Men's Motus Crew Long Sleeve

    Our Price:
    $74.85
  • The Motus Crew is superb for everything from trail running to climbing to moderate day hikes. Made with Arc’s Phase SL fabric, it’s incredibly light and is made with antimicrobrial fibers that help keep bad smells at bay.

    Arcteryx Men's Motus Crew Short Sleeve

    Our Price:
    $64.85
  • 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.

    Columbia Men's Baselayer Midweight Long Sleeve 1/2 Zip

    Our Price:
    $48.00
  • Cozy, thin, and super-Soft - Columbia's Midweight baselayer is the perfect solution for early morning, cold-weather hikes.

    Columbia Men's Baselayer Midweight Long Sleeve Top

    Our Price:
    $44.00
  • A high-tech revision of your old long underwear, these will keep you warm, dry, and comfortable during those short days of the year.

    Columbia Men's Baselayer Midweight Tight

    Our Price:
    $44.00
  • The Baselayer Midweight Tight packs a thermal liner to help trap body heat so that you stay toasty warm on your next cold weather adventure. With wicking properties to help pull moisture away from the body, this is one technical long john.

    Columbia Men's Baselayer Midweight Tight with Fly

    Our Price:
    $44.00
  • These performance all-day briefs are the perfect combination of comfort and technology, featuring ergonomically wrapped seams with slight compression for comfort and support. Wear them to ensure that you make it through hot grueling temps.

    Columbia Men's Coolest Cool Jewels 6 Inch Short

    Our Price:
    $35.00
  • The Extreme Fleece is Columbia's response to extreme cold. This is your go-to layer for sub-zero temperatures.

    Columbia Men's Extreme Fleece Long Sleeve 1/2 Zip

    Our Price:
    $64.00
  • The Extreme Fleece is Columbia's answer to extreme cold. Designed to keep you warm without the bulk of traditional fleece, the Extreme Fleece is your go-to baselayer for sub-zero temperatures.

    Columbia Men's Extreme Fleece Tights

    Our Price:
    $60.00
  • Although it could pass for a nice long sleeve casual piece, the Men's Mountain Tech II is an extremely versatile baselayer. With UPF protection, moisture wicking and anti-stink properties, you'll be able to use this one for almost any adventure.

    Columbia Men's Mountain Tech II Long Sleeve Top

    Our Price:
    $28.00
  • There’s a reason that the Mountain Tech has become one of Columbia’s most popular technical pieces for active outdoor adventures. It fits like a dream, wicks moisture away from the core and antimicrobial properties keep you smelling fresh.

    Columbia Men's New Mountain Tech III Short Sleeve Top

    Our Price:
    $30.00
  • Light and soft against your skin, this innovative tee protects you from the sun while dispersing heat and moisture. It also boasts Omni-Freeze technology, which reacts with sweat to lower the temperature of the material.

    Columbia Men's PFG Freezer Zero Long Sleeve

    Our Price:
    $75.00
  • Light and soft against your skin, this innovative tee protects you from the sun while dispersing heat and moisture. It also boasts Omni-Freeze technology, which reacts with sweat to lower the temperature of the material.

    Columbia Men's PFG Freezer Zero Short Sleeve

    Our Price:
    $65.00
  • The perfect cold-weather, all-day hunting baselayer. With space-age technology to keep you warm and camo colors to keep you out of sight.

    Columbia Men's PHG Baselayer Midweight Long Sleeve Top

    Our Price:
    $60.00
  • The perfect cold-weather, all-day hunting baselayer. With space-age technology to keep you warm and camo colors to keep you out of sight.

    Columbia Men's PHG Baselayer Midweight Tight

    Our Price:
    $60.00
  • The Columbia Schuss is a perfect solution to those days when you can't decide between a traditional long sleeve and midlayer pullover. With UPF protection and water resistant properties, this is one stellar crew.

    Columbia Men's Schuss Crew

    Our Price:
    $40.00
  • Omni-Freeze ZERO technology reacts with sweat to lower the temperature of the material, while UPF 50 protects you during intense activity in the heat. Great for backpacking trips, the Total Zero is also great for trail running as well.

    Columbia Men's Total Zero Short Sleeve Tee

    Our Price:
    $50.00
  • The ExO Dri Tee is a performance shirt with a casual look featuring dri-release technology. It keeps you cool, dry, and fresh without looking like you just ran a marathon. The ExO Dri will also protect you from the sun’s harmful rays .

    Exofficio Exo Dri Tee

    Our Price:
    $36.00
  • The BugsAway Breez'r is Insect Shield Repellent Apparel from ExOfficio. The Breez'r features Flow Thru Ventilation on the front and back to keep you cool and protected on hot, buggy days.

    Exofficio Men's Ba Breez'r Long Sleeve

    Our Price:
    $64.00
  • The BugsAway Chas’r Crew Short Sleeve provides sun protection with a UPF 30+ rating, dries quickly, and wicks moisture from the skin. It also gives long-lasting, effective and convenient insect protection.

    Exofficio Men's Ba Chas'r Tee Short Sleeve

    Our Price:
    $32.00
  • Join the thousands of people who have discovered the ExOfficio travel underwear revolution. Just toss your Give-N-Go’s in the laundry or wash them in a sink. Within hours you will have a fresh, dry pair of underwear.

    Exofficio Men's Brief

    Our Price:
    $16.00
  • The ExO Dri Tee may look like an ordinary shirt, but don't be fooled. Featuring Dri-release technology that wicks moisture and fights odor to keep you cool, dry, and fresh, the ExO Dri is a performance tee to the core.

    Exofficio Men's Exo Dri Crew Long Sleeve

    Our Price:
    $40.00
  • ExOfficio's greatest product is the last pair of underwear you'll ever want to wear. The Men's Give-N-Go Comes with odor resistant and lightweight properties. You'll wonder where they've been your whole life.

    Exofficio Men's Give-N-Go Boxer

    Our Price:
    $20.80
See Trekt Reviews at Bizrate.com