IPX7 waterproof for bath and shower play and easy cleaning, Free Spirit is Ultrasilk™ smooth and made of Puria™ silicone, making it body-safe, phthalate free, latex free, and fragrance free. IPX7 Waterproof for bath and shower play as well as easy cleaning! It also features StayPut™ technology to ensure it doesn't pop out during use and remains secure within the body. The AnchorTech™ base keeps the plug comfortable for long-term wear! Requires 1 AAA battery, not included.