HIGH QUALITY SILICONE: Made from eco-friendly silicone materials, this swimming cap for adults is non-toxic, formaldehyde-free, soft, and harmless. High elasticity allows for easy wear and removal, providing a comfortable experience during water activities. DURABLE & TEAR-RESISTANT: Featuring high-tech seamless line pressing, the cap is highly elastic, durable, and resistant to tearing or deformation. The interior has a non-slip texture that helps keep the cap securely in place without slipping. WATERPROOF & PROTECTION: The silicone swim cap helps keep hair dry and protected from chlorine, bacteria, and other pool chemicals. Ergonomically designed to minimize water entry, it helps protect both hair and ears. SUITABLE FOR LONG HAIR: Measuring 21x26cm, the large size is ideal for long hair, including dreadlocks, weaves, extensions, braids, curls, and afros. Also suitable for short hair. WIDE APPLICATION: Ideal for daily swimming, swim lessons, and various water sports.