SMARTWOOL MERINO 250 BASELAYER SZ L Description: Our best selling and warmest base layer, just got a little more refined with an improved fit, chafe-free seam construction and panels that offer more comfort with a pack. This heavier, soft, 100% Merino wool fabric offers breathable warmth, moves sweat away from the body, and provides next-to-skin comfort in colder conditions Features: • Slim Fit • 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance • Crew neck with set in sleeves • Back body seam wraps to front for body- enhancing fit • Shoulder panels eliminate top shoulder seams • Flatlock seam construction designed to minimize chafing pit to pit:18" length:27" shipped from a smoke and pet free home