Tonkey HeavyBall (weight from 900 to 3000 g)

These are variable weight dumbbells made of soft plastic material that represent a valid and safer alternative to traditional rigid dumbbells; in fact, if during the exercise a Heavyball dumbbell were to accidentally hit a part of the body there would be no particular physical problems for the user. Easily usable with both hands and feet, they can be filled with water or sand to change the weight according to your needs. They are supplied with a useful exercise guide.