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Icebreaker crafted the Men's Sonic Crew out of lightweight, naturally antimicrobial, and moisture-managing merino wool to keep your body at an ideal temp whether you're running or working out, and a bit of Lycra ensures uninhibited mobility throughout. The Sonic also features eyelet mesh panels for ventilation, flatlock seams for reduced chafing, reflective details for visibility in low light, and a secure back stash pocket for energy gels or your keys. 

  • Merino wool and Lycra blend
  • Naturally antimicrobial
  • Regular fit
  • Eyelet mesh panels
  • Flatlock seams
  • Secure back stash pocket
  • Reflective details
  • Reviews
  • Q & A

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Sweat Shirt

  • Familiarity:I've used it several times
  • Fit:True to size

I bought this shirt in the blue and green for running. This shirt was a disappointment because it really saturates moisture. The Sonic would be totally wet and abrasive after a 5-8km run. Because I am on holiday on Kauai I went to BigK and bought a $11 Everlast, 100% poly shirt that performed way better then the IceBreaker Sonic. To bad because I love the IceBreaker run shorts. I will keep these shirts for a light duty travel or like hiking because they don't stink.

Lightweight, visible, wool!

  • Familiarity:I've used it several times
  • Fit:True to size

I bought this for biking in for my daily commute. My other wool shirt for biking was heavier weight and black, and I wanted something cooler for the summer months, and more brightly colored. This fit the bill perfectly. The vented back is very airy, and the coloring is pretty bright (although not a true neon color)

There's a little patch piece on the front of the next that I'm not sure what it's for, and it looks a little awkward, but I chose function over form with this garmet, and it's doing a great job. As usual, the wool doesn't smell even after several days of wear.