These Crystal Balls Glass Heart duotone pleasure balls are hand blown and look extremely stylish. Encaptured within each Crystal Ball Glass Heart is a pretty pink shaped love heart. The Glass Balls are both presented in a romantic, satin lined heart shaped storage tin. Each Glass Ball is seemless, smooth and very discreet. Designed to improve the kegel muscle, they are ideal for any kegelmaster routine to help strengthen your pelvic floor muscle.