Icebreaker made its Men's Sonic Zip-Neck Long-Sleeve Top out of merino wool to regulate your body temperature while you work out, and it's antimicrobial so it'll stay fresh after a long run. A drop-tail hem keeps you covered when you stretch and bend. Mesh underarms and back panel keep you dry when you pick up the pace. The half-zip front adds immediate ventilation in case you get too warm. And thumbholes keep the sleeves in place so you can focus in on your workout.

  • 96% merino wool, 4% Lycra
  • Naturally antimicrobial
  • Drop-tail hem
  • Half zip front
  • Thumbholes

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Icebreaker Sonic Zip-Neck Top - Long-Sleeve - Men's

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Here's what others have to say...

5 5

Love this thing

  • Familiarity: I've put it through the wringer
  • Fit: True to size

This is similar to the Icebreaker Sprint top, but a little thinner for warmer weather. I use it for running, biking, and backcountry skiing.