The rounded tip and tapered body is designed for easy insertion and provides amazing anal pleasures. The Rio is ready to party with 3.5 in. of insertable length with a classic anal plug that ranges in diameter from 0.5 in. to 1.25 in.. with a 2.4-in. wide safety base. This vibrating anal plug uses a simple two button control system and can run up to 2 hours on just 1 AAA battery. not included. Made from smooth. body-safe Silicone and ABS. this vibe has a silky smooth surface.