Built to hold up when it's time to swim hard, the high-stretch silicone material is durable with a textured lining that stays put. Chlorine-resistant and hypoallergenic, the Nike Swim silicone cap keeps up with you over long miles in the lanes. Benefits:Textured lining helps increase traction for a secure fit. [] Product Details:Hypoallergenic, high-stretch silicone material. Chlorine resistant. Product intended for ages 8-14. Silicone. Rinse in cold water and wipe inside and out after every use. Style: TESS0106; Color: Black; Size: One Size; Gender: Unisex; Age Group: Adult | Nike Swim Big Kids' Silicone Cap in Black, Size: One Size | TESS0106-001