Smartwool

MerinoMax 1/2-Zip Sweater - Men's

The SmartWool Men's MerinoMax 1/2-Zip Sweater takes the magic of merino and molds it into a body-snugging baselayer for your cool-weather endeavors. Merino manages moisture vapor so your hot body doesn't overheat or become a breeding ground for dank-dwelling creatures. Huh? Merino moves pre-sweat away from your body to the sweater surface for rapid evaporation so you can run or ski hard and not be overcome by heat. Odor-causing bugs need a warm, moist environment to thrive. If the sweat isn't there, then the stink doesn't happen. The body-hugging fit means this 1/2-zip slips under shells or goes it alone on a cool fall trail run. Thumbloops hold your sleeves in place, on the off-chance you bust into a version of Y.M.C.A. mid ski-run.