LeLuv Glass Balls Classic Kegel Exercisers Medium Clear Pair Bundle with Premium Padded Pouch

Ben Wa balls (or "kegel balls") are spherical shaped sex toys used as a means of exercising the PC muscles and vaginal lining. With daily exercise, you will be able to prevent the balls from falling out by "holding" them in tightly. Doing this regularly will help shrink the vagina back to its original elasticity, achieve more pleasurable sex and provide sensual sensation when in use.

Small balls are recommended for advanced users since they are more difficult to "hold." The medium or large size would be a great starting place for beginners.