The Synthetic Fiber by Water Gear is an extremely lightweight and comfortable swim cap. Made from synthetic fiber, man-made elastic fiber with unique stretch and recovery properties, the material adds comfort, fit, shape retention, durability, and freedom of movement. The swim caps for women swimming gives you comfort without any painful knots that are known with silicone. The pool cap can be used under silicone if needed to shave sometimes when competing. This swim cap's long hair is not completely water-proof due to the lightness in the material used but for the most part, will keep you as dry as possible! Water Gear swimming gear is known for quality and is the top swimming accessory on the market. Our swimming cap for kids and adults is a swim cap women can trust and also a swim cap kids can trust. It is a swim cap for men women kids and adults because of its one size fits all adaptability to the swimmer's head.