Chrystalino Ben Wa Balls Medium White from Shots Toys. Size 5.62 inches by 1.18 inches. These beautifully crafted Ben Wa balls can be used to increase the strength of the pelvic floor muscles. They also create a subtle stimulation, not meant to bring the user to an immediate orgasm, but rather to tease! Place the balls under a stream of lukewarm or cold water and the premium borosilicate material will heat up or cool down for enhanced temperature play.