Description of Keen Bellingham Crew Lite Socks - Women's Cushioning where you need it for all day comfort. Features: Natural Merino wool & nylon/lycra A comfortable casual style anatomically designed to fit her right and left foot Cushioning across entire foot bottom for impact reduction and moisture management Y heel pockets for better fit Anatomical Flex Fit system reduces bunching of material underneath feet Lycra top to bottom for fit and comfort Ravel free double welt top to keep socks up