Your hiking, biking, anything outdoors staple. An outdoor adventure essential, our Alpine Start Sun Tee is made from moisture-wicking fabric with UPF 40+ sun protection to keep you cool, comfortable and covered when you're headed outside. Features UPF 40+ fabric shields you from harmful UV rays Moisture wicking fabric keeps you cool and dry when the sun is out in force Anti-microbial fabric provides anti-odor protection to help keep your clothes fresh Anti-chaffing flat seam design Made for comfortable use under a backpack with off-shoulder seams Materials 88% Poly, 10% Spandex, UPF 40+ Tech Specs - Size M Center Back Length: 26.75 in / 67.95 cm Sleeve Length: 17 in / 43.18 cm Weight: 4.75 oz / 134.72 g | Sierra Designs Men's Alpine Start Sun T-Shirt in Ultimate Grey Heather, Size Medium