Nasstoys of New York Naughty Explorer Kit Pink. 5 piece kit: 5 speed bullet vibrator, 4 interchangeable sleeves. Waterproof for play outside the bedroom. Phthalates free materials: Vibrator Sleeves Silicone, Bullet Vibrator ABS plastic. Length Bullet 3.5 inches, Sleeves 4 inches. Vibrating sex toy requires 1 AAA battery, not included.