Material:These shower hats are made of quality & durable EVA material, non-toxic, tasteless, effectively keep your hair from getting wet in shower.,Elastic;Size(Approx.):Diameter about 27cm. Elastic Band Design: designed with strechable elastic band makes the shower cap fit most head sizes and keeps the cap in place while you showering, wont too tight to make you uncomfortable. Suitable for kids, girls and women. Reusable Shower Caps: our shower caps can be wash and reusable, non-disposable. It is lightweight, can be folded while travel. Widly Application: These waterproof hair cap can fit for showering, cooking and SPA, protect your hair well or can be applied for tying hair when making up, cleaning face, etc. Reusable and Waterproof,Small volume and easy to carry.Keep your hair dry in style and enjoy your time while you Shower,Shampoo,SPA time and other occasions.