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Icebreaker made its Men's Base Layer 200 Sprint Long-Sleeve Crew out of merino wool to regulate your body temperature in cool conditions and naturally resist odor. A great all-season workout top, the Sprint comes in a slim fit for speed, and it has a gusset for comfort and freedom of movement, plus anti-chafe seams.

  • 96% merino wool, 4% Lycra fabric
  • Naturally antimicrobial, naturally regulates body temperature
  • Raglan sleeves
  • Slim fit
  • Flatlock seams
  • Gusseted
  • Reviews
  • Q & A

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Running, Hiking and Winter layer

  • Familiarity:I've used it once or twice and have initial impressions
  • Fit:True to size

This is an excellent piece that I have ran in, hiked in and napped in. The great thing about merino is that the uncomfortable back sweat you get under your pack evaporates quickly once you take your pack off. Also, if your not sure what the temps will be this should be your choice, keeping you warm if it cold and cool if its warm and an added bonus are the thumb loops for running. I' really looking forward to getting some snow so that I can test it out some more.

Running, Hiking and Winter layer

perfect layer

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

A good base layer is like a good pair of tires. If you're going to make it up the hill on a day where it snowed 16in overnight, you need to have a good set of tires, with at the very least decent tread, to make it safely. Meaning, if you're going to make it you need to at least give yourself a chance at success. Also the same as shooting a basketball, you have to put the ball above the rim for it to have a chance of going in. How does that relate to a baselayer? Well, in order to properly regulate body temperatue you need to at least give yourself a chance. Synthetics are great for hot or cold, but they end of smelling...ripe. The thing I love most about merino wool is that 1) it doesn't smell bad, ever, 2) it's far more comfortable than any other base layer material, and 3) it regulates body temperature better than other base layer materials, in my opinion. This layer is great cause it's not too heavy and can be worn in multiple applications. Comfort is #1, smell is something you can deal with if a piece of clothing is comfortable and if it does it's job of regulating body temperature, but comfort is not. This piece meets my prerequisites of comfort, smell, and various applications. Needless to say, Icebreaker makes one hell of a merino base layer. Highly recommend.