Columbia Sportswear Baselayer Midweight 1/2-Zip Top

Priced: $47.99 - $60.00 Rated:   - 5 stars out of 5 by 2 reviews.
Columbia Sportswear Baselayer Midweight 1/2-Zip Top
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Color: Dark Compass
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Columbia Sportswear Baselayer Midweight 1/2-Zip Top - What’s next to your skin sets the stage for your comfort: don’t mess around. Developed with top physiologists, Columbia’s new baselayer series offers maximum warmth, minimum weight, and zoned performance for optimal comfort. Our bodymapped design keeps you warm and dry in all the right spots by placing Omni-Heat® reflective dots in zones that need warmth most, and Omni-Wick™ in high-perspiration zones for maximum moisture transmission. Antimicrobial treatment keeps the fabric feeling (and smelling) fresh during high-exertion activities, while a deep neck zipper helps you moderate heat when you need to. Highly stretchable, with flat-lock stitching to avoid chafing and raglan sleeves for extended range of motion, this midweight top sets you up for success.


  • Performance fit


  • Antimicrobial treatment prevents the fabric from accumulating odors over time
  • Slim, form-fitting design reduces excess fabric bulk for an athletic look
  • Omni-Wick fabric's blend of polyester and four-way-stretch elastane provides a comfortable feel that wicks sweat and keeps your body temperature regulated


  • Omni-Wick advanced evaporation

Weather and Wind:

  • Omni-Heat thermal reflective tech reflects body heat back towards your skin for improved heat retention in cold weather
  • Ergonomic seaming


  • Imported


  • 85% Polyester/15% Elastane
  • Thumb holes
Built with a half-zip neck for added ventilation and thumb loops to prevent the sleeves from levitating up your arms, the Columbia Baselayer Midweight 1/2-Zip Top is as versatile as it is stylish.
You think you're ready to conquer those frigid alpine ascents armed with nothing more than a gnarled walking stick and a pile of gumption? Awesome! Before you go, though, consider a Columbia® base layer in case it's a little bit chillier than you expect.
keeps everything tight to the body for maximum support during rigorous activity.
Four-way stretch fabric enhances comfort and allows wider range of movement.
Omni-Heat® thermal reflective lining boosts body heat retention while maintaining breathability.
® technology draws perspiration from high-moisture zones and disperses it across the fabric surface for faster drying.
application minimizes odor and prevents bacterial growth.
Mock neck increases protection.
Front zip opening allows increased and adjustable ventilation.
Raglan long sleeves.
Cuffs with thumb loops extend coverage to keep hands warmer.
improves freedom of movement.
Droptail hemline.
86% polyester, 14% elastane.
Machine wash cold, tumble dry low.
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Review RatingNumber of Reviews
Fabric:86% polyester/14% elastane
Length:29 in
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Columbia Sportswear Baselayer Midweight 1/2-Zip Top Reviews:


I thought, in having found SmartWool midweight baselayers, that I already "knew" which baselayer is the absolute best. Then I picked up one of these. Lighter. Stronger. Fits very close, but not too close. Retains heat amazingly well. I sometimes sit around in shorts with this thing on as my shirt, sipping coffee and my roommates look at me baffled, "Aren't you cold?" and I'm like, "NOPE."

B.E. Hardisty at on 11/05/2013

I'm 5'10 , 190lbs, muscular and Medium fits me perfectly. I really like the material and its warmer then it looks. I am also surprised at how much it never smells bad, I've worn it for 2-3 many times and it didn't smell.

Karim Gouibourk at on 07/23/2013