Waterproof vibe features the unique properties of X5 material, which allow it to have a realistic feel. Responds to pressure while remaining highly resilient. The vibe's specialized and removable suction cup is also a controller, equipped with a rotating speed dial to change vibration speed. Measures 9.25 in. long, 7.5 in. insertable, 2 in. wide. Requires 2 AA batteries, not included.