BNWT Smartwool Ultralite Active Short Sleeve | Color Blueberry Hill (Blue) | Size M Simple but practical, our Men's Sport Ultralite Short Sleeve tee is soft yet functional, for all-day comfort and utility. Its super-light performance fabric-a blend of ZQ-certified Merino wool with TENCEL™ Lyocell fibers, this performance fabric will help keep you cool when your intensity amps up, and its design helps minimize chafing. Plus, it's odor-resistant, breathable, and temperature-regulating, all helpful features when you work up a sweat. With an athletic fit, this tee will keep you looking and feeling good, whether you're pumping iron at the gym or hitting the trail for a hike.