Ro-Zen is a brilliant, mult-tasking toy designed to take you and your partner over the edge. The senuous feeling of the satin silicone alone is enough to start things off. The stretchy rings are worn around the base of the wearer's erection and scrotum for a comfortable, secure fit. The erection rings connect to an anal toy with substantial vibration to provide a strong internal massage. The nubs on the connecting piece provide external pressure against the perineum to boost arousal from all sides. If you enjoy constriction, vibration, and the filling sensation of an anal toy, Ro-Zen is the perfect way for you to amp up your partner play and take things to the next level. Color: Black Material: Silicone Batteries: 1 1.5V (inclued) Size: total length of toy stretched out is ~8", insertable length of anal toy: 2 1/2", connecting piece is 2 1/2" long, diameter for scrotum erection ring is 1 1/2" penis is 1 1/4" Care & Cleaning: Clean with warm sopy water; Do not use silicone lubricant with this item.