Coco licious Silicone Kegel Trainer Black Balls. This is my type of workout! Versatile Kegel training system with easy retrieval cord. 3 interchangeable weighted Kegel balls. Smooth and seamless premium Silicone. Safe and pure for body and pleasure made using phthalate free materials Silicone holder, balls, Abs plastic, fiberglass decor. 1 " diameter, small balls: 20g and 30g e or roughly .70 and 1.05 ounces. 1.25 inches diameter, large ball: 40g e or roughly 1.41 ounces