Womens No Show Socks by The Seamster Company - Cotton Non-Slip Cotton/Spandex Imported Long lasting, 100% no-show socks made of premium, ultra-comfortable cotton Elastic waist and silicon heel guarantee they won't slip off your feet The perfect thickness to absorb sweat and still fit in all your favorite shoes One Size fits most. Cotton/Spandex blend stretches to fit your foot perfectly. Please contact us if you have questions about sizing! Machine washable, air dry only