Ergonomic Design with soft Foam Handle fits all hand size for men and women, and providing a maximum comfort grip and anti-slipping. Built to last with the high quality hard foam/plastic handle and metal springs.Safe grip sponge handle fits your hand and give you a best comfort feeling. It has been scientifically proven that using a grip strengthener helps relieve stress Rehabilitate and relieve pain using the hand strengthener,beneficial for people who have arthritis, tennis elbow and carpal tunnel syndrome, etc
