These tools, made in soft plastic material, are a very good alternative to the classic and traditional rigid dumbbells. Unlike the rigid dumbbells, Heavyball do not represent a danger for the user if they accidentally hit a part of the body. Furthermore they can be used either with hands or feet and are easily filled with water or sand to change their weight. Each pair comes with a useful guidebook of exercises.
California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.