Double Ball Kit Ben Wa Balls Viginal Tight Function: Vagina Training Ball Color: Black/Pink/Purple/Green Size:  Small Ball: 14 * 3.3 cm/5.5  * 1.3 inch (45 g/0.1 lb/1.5 oz) bigg Ball: 19.8 * 3.3 cm/7.8  * 1.3 inch (84 g/0.18 lb/2.9 oz) Power: No Material: ABS +...