Experience delightful ball stimulation with this vibrating ball sack from Trinity Vibes! The stretchy silicone ring has a diameter of 35 mm (not stretched) and stays perfectly in place. Enjoy 3 powerful speeds and 4 patterns and feel free to take the toy with you in the bath or shower as it can stay submerged in water for up to 30 minutes (IPX7). The material is made of body-safe silicone and it's easy to recharge with the included USB cable. Clean after use with lukewarm water and a toy cleaner.