Material: The disposable ear cap is made of transparent PE; Safe and waterproof. Effectively prevent water droplets from entering the ears. Function: The ear protector covers help protect your ears away from waterdrop when you take shower, wash hair with shampoo or dye hair.(But not for diving) Wide Application: These ear covers are disposable, suitable for home, hotels or other places that need to pay attention to ears. Stretchable Size: The plastic ear cover are in free size with a elastic band, fit your ear perfectly. The product is not completely waterproof, and the tightness will vary according to the size of the ear. If it is a small ear, it is recommended to use it with an elastic rope. Quantity: Package include 100 pieces disposable ear covers, enough for some time use.