Keen ultralite wool blend socks for walking, hiking, traveling or hanging out. Chafe-free comfort, soft. New with tags Size Large: Men’s 9-12 ir Women’s 8.5+ (I wear W’s 8 and these are a bit big). Wool blend with nylon for temperature regulation, moisture wicking and odor resistance. Spandex for shape and comfort. Contoured cushioning absorbs impact. 48% US wool, 49% US nylon, 3% spandex Flat hidden toe seam. Left and right fit for optimized comfort. Pet and smoke-free.