TKO Men's 10 Pack Ultra Lite Performance Running Athletic No Show Socks 97% polyester Machine wash cold gentle cycle Fits size 10-13 Shoe size 6-12 Moisture wicking compression ribbing conforms to the shape of your arch for maximum support Arch support wicks sweat and moisture away from skin Ultra lite keeps fabric dry, Breathable and comfortable knit fabric 97% Polyester 3% Spandex