If you want to be sure you're Kegeling correctly, our Ben Wa Balls are the answer! These Oriental balls ensure you're exercising your vaginal walls and bladder muscles in a way that will positively impact sexual arousal and ability to enjoy the sensations associated with intercourse. Use the silver plated Ben Wa Balls regularly to restore and maintain vaginal elasticity. Girth: 2.5 in. (6.5 cm.)