85% Cotton, 12% Polyester, 3% Spandex REINFORCEMENT OF THE TOE: Due to the relatively high pressure received by the toe, it is difficult for a layer of fabric to resist high-strength friction. BREATHABLE: The front mesh can effectively control the smell and keep the feet refreshed all day long! NON-SLIP, NOT FALLING:Three non-slip silicones will be firmly attached to the heel to prevent slipping. If it slips AFTER-SALE WARRANTY: WANDER's customer service will always be there, no matter what problem you have, you can always contact me!