For those who love to stimulate their balls, this Vibrating Silicone Ball Sack is made just for you! The stretchy, silky smooth silicone sack slips right over your balls with the help of some water-based lubricant. Enjoy 3 speeds and 4 patterns of powerful, rumbling vibration right in your nuts. The premium silicone is phthalate-free and body-safe so your play is worry-free! Take the vibe into the shower, pool, jacuzzi or bathtub; it's rated as IPX7 waterproof so it can withstand being submerged for up to 30 minutes! After you're done, wash it with warm water and soap, then spray it with a toy cleaner. Recharge using the USB cable provided.