Set of 3 balls with different weights and different sizes, made of seamless, medical-grade silicone with a light weight inside to enhance the effect. Made of soft, seamless, medical-grade silicone - 1 ball is 30 mm wide and weighs 74 g - 1 ball is 25 mm wide and weighs 46 g - 1 ball is 20 mm wide and weighs 22 g
