The Adult Universal Pure Silicone Ear Protection Swimming Caps are made from the latest advanced silicone, making them super non-slip and water-tight. Unlike latex caps, these caps are nontoxic and friendly to the skin. They are lightweight and comfortable to wear, so you can barely feel them while swimming. These caps feature a 3D ergonomic design based on the American head type. They are tightly wrapped around your head without causing any pressure, providing a great room for expansion and a more comfortable fit. Additionally, they offer less swimming resistance compared to traditional designs. Designed with a large ear protection pocket, these caps fully hold your ears and prevent overpressure. They also protect your ears from chlorid, sand, and bacteria in the water. You can easily cover and uncover your ears as needed. With good elasticity, these caps can be stretched easily without deformation. They are suitable for both adult men and women, regardless of long or short hair. The thicker curved edge of the caps ensures a better fit and effectively keeps your hair dry by preventing water from getting in. Please note that the caps may have a slight smell due to being stored with silica gel. You can simply put them in a ventilated place to dissipate the smell upon receiving the goods. Key Features: Made from advanced silicone for a non-slip and water-tight fit 3D ergonomic design for a comfortable and less resistant fit Large ear protection pocket to prevent overpressure and protect from water contaminants Good elasticity for easy stretching without deformation Thicker curved edge to keep hair dry Suitable for both men and women Can be used with long or short hair Comes with 1 swimming cap