PRETTY LOVE BI-026209-2Wrap this super-stretchy TPR cage around your equipment for erection-enhancing support and wild textured sensations for both of you. A highly recommended cock sleeve that gives your penis extra texture and a natural look. And the base features a ball ring that hugs the base of your balls and will keep the extender in place and provide some erection prolonging effects. FEATURES  Material: TPR Function: Vibration Power : 3 AG9 batteries