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  • BodyfitZONE™ construction combines lightweight 200g stretch merino wool with strategically placed merino mesh panels to help regulate temperature during stop-and-go days
  • Corespun fabric for enhanced durability
  • Deep half zip aids in dumping heat when you're moving fast
  • Gusseted side panels keep the shirt from pulling up while reaching
  • Flatlock stitching eliminates chafing during day after day of dynamic motion
  • Droptail hem for added coverage


View all Icebreaker Men's Long Underwear Tops

REI membership


Best Use Multisport
Shirt Style Zip-front
Fabric 96% merino wool/4% Lycra spandex
Moisture Wicking Yes
Underwear Weight Lightweight
Sleeve Length Long Sleeve
Gender Men's

Size chart

Sizing notes

Measurements are stated in inches unless otherwise indicated. CHOOSING THE RIGHT SIZE: If your body measurements are midway between two sizes, select the smaller size for a tighter fit or the larger size for a looser fit. If your body measurements result in different sizes, we recommend using your chest measurement for tops and your hip measurement for pants.

Rated 5 out of 5 by from The base layer of choice I have been wearing icebreaker 200 and 260 turtleneck base layers for several years on bicycle trips under a cashmere sweater as evening wear or with bicycle shirts as a base layer in cooler and colder conditions.Nothing surpasses them.I love them but do not ever put them in the dryer-a mistake made once.Great on the bicycle trips as they are so lightweight and easy to pack but still so comfortable and warm.
Date published: 2016-11-20
Rated 5 out of 5 by from Great Cool Weather Run Shirt I love Merino Wool! So nice to run in something that is so good at helping to regulate body temperature. It wicks and breaths and doesn't stink. So much better than synthetics. This half zip is a great cool weather running shirt. I really like the extra heat dumping ability of the thinner material in the under arm area.
Date published: 2016-09-22
Rated 5 out of 5 by from I, I, I, I ..... Love these products!! Super-high quality, fit is athletic on body-fit zone style! Great to sleep in as well ....
Date published: 2016-12-28
Rated 5 out of 5 by from Brrrrreathable! Keeps me warm while skiing and thats says a lot coming from someone who is naturally cold natured.
Date published: 2016-11-24
Rated 5 out of 5 by from Go to base layer for cross country skiing I wear this under my ski jacket for every outing. I'll never go back to man-made fibers.
Date published: 2017-01-23
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