Ultrafine 185 g merino wool offers a soft feel without any itchiness Made with 100% merino wool that naturally breathes, wicks away sweat, dries quickly and resists odors, making it an ideal multiday trip companion UPF 30 sun protection Flat seams and merrow stitch construction eliminate chafing Underarm gussets allow full range of movement Designed to hug the body for optimum performance Center back length: 27.5 in. Weight: 9.8 oz. (size 3X) Machine wash warm, gentle cycle, with wool wash product; do not twist or wring; remove promptly; do not bleach; tumble dry low; dry cleaning not recommended Field-tested on its own and as a base layer while hiking, running, rock climbing, cycling, skiing and camping in diverse climates across the U.S. Made in a Fair Trade Certified™ factory COLOR IS RUST ORANGE