With a tapered and slender design that's simple to insert for beginners, the My First Anal Slim Vibe features an extra playful addition: it lights up! With lights in the base that flash in sync with each of the 10 different vibration modes, nighttime sessions just became more fun. This sex toy is also waterproof. The My First Anal Slim Vibe requires 2 AA batteries (not included). For safety's sake, make sure to keep a firm grip on the base of the toy for easy removal after use.