Silver 3 speed bullet vibrator comes with 3 different styles of silicone rings. Maximum stimulation. Waterproof vibrations for play outside the bedroom. Made using phthalate free, non-toxic materials Bullet vibrator ABS plastic, Rings Silicone. ABS is hard plastic, non-porous, durable and easy to clean and maintain. All types of lubricants may be used with hard plastics but be sure to clean well around seals. ABS products are safe, pure plus phthalate free. Silicone high quality, hygienic man made polymer that is non-porous, durable, soft, flexible, pliable as well as versatile in its application in the sex toy production. Silicone is safe and pure phthalate free. Water based personal lubricant is recommended. Vibrating sex toy requires 1.5V N battery, included. Do not leave battery in the vibrator between uses. Bullet vibrator measures 3.19 inches long. 2 silicone rings with ticklers measure 1.575 inches outer diameter, 0.67 inch inner diameter. Double ring measures 1.457 inches outer diameter, 0.75 inch inner diameter. Always clean before and after use.