The Speedo Solid Silicone Elastomeric Fit Caps have inner micro grid texture that provides more comfort and stretchy silicone won't snag or pull hair. Soft, durable silicone for long lasting wear. Interior textured surface keeps cap in place. Snug fit for optimum performance. Contoured shape reduces drag for outstanding hydrodynamic performance. Ideal for the competitive swimmer and is Latex-free. Good for medium to long hair. The Speedo Elastomeric Cap is the first silicone swim cap specifically designed for fitness swimmers. Elastomeric caps offer greater elasticity and increased ease of stretch with a softer silicone compound than traditional performance caps.