Made of premium. non-porous silicone. this vibrating beaded sound is body-safe and easy to sanitize. Experience every nodule as the flexible tail slips down the urethra. The one-speed vibrator is powerful. and will send shivers down the shaft. Waterproof for versatile use and convenient cleaning. Measures 9.5 in. long. 6 in. insertable. Beads range from 0.18 to 0.28 in. Requires 1 AAA battery. not included.