Columbia Men's Heavyweight II Long Sleeve Half Zip

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Be prepared for the elements in this long-sleeve, four-way comfort-stretch performance base layer that wicks sweat and ensures your comfort whatever the weather. With thermal reflectors, ergonomic stitching and comfort stretch fabric this is a must-have base layer. The thumbholes will only accentuate the thumbs up you feel compelled to give whilst wearing the Heavyweight II.

  • Fabric:
    • Omni-Heat Reflective (85% polyester, 15% elastane)
    • Omni-Wick Stretch Jersey (85% polyester, 15% elastane)
  • 4-way comfort stretch
  • Ergonomic seaming
  • Flatlock seams
  • Antimicrobial treatment
  • Thumb holes
  • Fit: Performance
Product Code: A1912742
A wooden house with few pairs of skies leaning against it is half-covered by snow in the dark.

Columbia was born in Portland, Oregon, USA, where snow-covered volcanos and glaciers are just a hike away. Our goal is to keep you protected no matter what. That’s why our products are tested in the harshest conditions Mother Nature can muster.


Our Tested Tough stamp is Columbia’s promise to you that we’ve done our job. We’ve tested our products high atop cascade peaks, on the crashing waves and soaking rain of the Oregon coast, and in some of the most challenging conditions around the world. All to ensure that when people wear Columbia, they’ll be able to stay Outdoors longer. And have fun while they do it.