Silica gelImportedgood performance swimming capSilicone Material: The swimming cap is made of high-quality silicone material, which is durable, tear-resistant and waterproof. Good elasticity and easy to stretch. The silicone material is safe to use and gives you the best protection while swimming.UNIVERSAL: Silicone pool caps are made of elastic material, making our swimming caps suitable for most people. It has a stretching ability suitable for both women's and men's hair.Ergonomic Design: The swimming cap is mainly designed in the shape of the human head, and it is easy to put on and take off without tangling the hair. It can help you swim faster with less water resistance and enjoy a comfortable swimming experience.This swimming cap is made of high quality 100% silicone material. It has the elasticity of tear-resistant material and will not deform after repeated use. Our swim caps stretch easily for the best fit.Simple and elegant design, there are a variety of colors to suit most people's choice.