100% platinum cured medical grade silicone. Silicone can be boiled, frozen, micro-waved or placed on the top rack of the dishwasher. Opening can be used to hold 5 speed bullet or as a finger grip. Thick, curved tip hits P-Spot. Push-4-Play single speed bullet. Silicone s soft texture becomes slick when lubricated. Silicone is durable, nonporous, hygienic and can last a lifetime. Waterproof. Phthalate free. 3 AG13 batteries included. 6.25" x 1" x 2.75" (15.75 cm x 2.5 cm x 7 cm)