Smartwool Women's 250 Long Sleeve Base Layer Shirt - 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. Slim fit; 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance; Fit updated to improve functionality while enhancing aesthetics for a range of body shapes; Back body seam wraps to front for body-enhancing fit; Crew neck with raglan sleeves; Flatlock seam construction designed to minimize chafing; Knit 100% merino wool; Style: SW016369001;