1. Short/long hair for adults and children: Silicone swimming cap has good elasticity and large space, and is flexible enough to fit most heads, including girls, women, men, boys and children with short or long hair. It can hold and protect your hair from chlorine and salt water, and keep your hair full and free from tangles when swimming, with clear vision 2. Protect your hair and ears: Our swimming cap is made of waterproof silicone material, which can protect your hair and ears from the chlorine in the water and the bacteria in the swimming pool. In addition, with the 3D ergonomic ear structure design, the swimming cap provides additional space for the ear to prevent overpressure and make it more comfortable. It also adds an additional protective layer for the ear to limit the water flow into the ear.3. Thickened silicone material: The swimming cap is made of high-quality environmental silicone material, which is durable, tear resistant and anti-aging. It is flexible, easy to stretch, and will not deform after repeated use. Silicone material is also odorless, non-toxic and skin-friendly, so our high-quality swimming cap is safe to use 4. Comfortable to use: The swimming cap is mainly designed for the shape of adult skulls, suitable for most people to wear, and easy to wear and take off, without affecting hair. In addition, good hydrodynamic design can also help you swim faster and reduce water resistance, thus reducing water resistance.