An amazing toy and an exerciser all in one! Smartballs help to exercise the pelvic floor muscle when worn in the vagina during any physical activity. Small balls are hidden inside the Smartballs shake when moved to create stimulating sensations inside the vagina. There is an indent on the bottom to aid in insertion.  Made of 100% silicone with ABS plastic. 100% silent and easy to clean.

Ball Diameter: 1.3" and 1.4" (3.3 cm and 3.6 cm)

Length: 3.7" (9.4 cm)