Premium Quality: Our swimming caps are made of 100% soft and durable silicone, which is non-toxic, odorless, skin-friendly and allergy-free. The tear-proof silicone swimming cap is very flexible and elastic but will resume its original shape after repeated use, providing years of wear. Better Protection: The silicone material gives the swimming cap a great stretch and suitable for most head sizes. This cap has a snug fit to keep your hair dry, so no water soaks through, keeping hair away from chlorine damage and the sun. 3D Ergonomic Design: The swimming cap adopts 3D ergonomic design to make it a more comfortable fit. It is easy and quick to take on and off. The unique design and super elasticity allows you to tuck hair under without compromising on that smooth hydrodynamic shape. Special Surface Treatment: The wrinkle-free surface helps reduce the swimmers energy expenditure to help maximize speed and efficiency. The swimming cap features a non-slip interior that prevent the cap slip when swimming and doesnt snag and rip at hair.