- 100 % Silicone - 5.5 insertable inches (14 cm) of pure silicone back door butt joy! - One of a kind brass knuckles give you total ramming control - Finger holes fit most; butt plug fits only bad ass individuals - Ultra smooth, 100% platinum cured medical grade silione is uber hygienic, non porous and becomes totally slick when lubed up - Super sleek design is easy to clean up after you get down and dirty - Silicone can be boiled, frozen, microwaved or placed on the top rack of the dishwasher - Waterproof and phthalate free