Soft Silicone Material: Our kids swimming caps are made of high quality silicone, which is soft and comfortable, providing good protection for your child's hair and ears; just stretch it, put it on and enjoy, it will give your baby a happy swimming experience. Fits most kids: lightweight and portable, this swimming cap is easy to put on and take off, designed to fit most children's short or long hair, making it a pleasant wearing experience for your child. New mermaid look: beanies toddler silicone bath with lovely mermaid design, novel and eye-catching, it's easier for you to find them when your kids are playing in a crowded swimming pool or in the ocean. Waterproof performance and non-slip: The waterproof swimming cap for children is designed with waterproof and non-slip materials, which can not only keep children's hair dry and prevent them from floating in the swimming pool, but also protect children's hair and ears from some unclear items, it will not slip, ideal for swimming, pools, open water and more Learn more about sizing: our waterproof swim cap measures approx. Tile size 18 x 19cm / 7.1 x 7.5", suitable for head size about 50 - 58cm / 19.7 - 22.8", one size fits most kids