Made of 100% ultrafine 185 g merino wool for a soft feel without any itchiness Merino wool naturally breathes, wicks away sweat, dries quickly and resists odors, making it an ideal multiday trip companion UPF 30 sun protection shields from harmful UV rays 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 in.; average weight: 4.7 oz. Machine washable 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. Size L Excellent Preloved Condition Pit2pit 20.5” Length 28.5” *No fading