Kegel balls with a diameter of 29 mm. Weight: 60 grams / set. Complete silicone exterior. Iron weights inside. Stimulate and strengthen your pelvic wall. The rolling weights provide a natural erotic massage to the vagina. Two balls in waterproof silicone. Through the silicone surface, the metal balls can move freely, offering a natural massage with every movement of the body. The weight of the Duo Balls is 60 grams, which helps in the training and strengthening of pelvic muscles. When inserting the In Bloom Duo Balls into the vagina, ensure that at least 2 cm of the cord remains outside. This makes the removal of the set easy.