Great for increasing flexibility, range of motion, fine and gross motor skills and relieve daily stress and strengthen your hands, forearms and fingers with simple exercises Therapeutic: soft feel Hand Exerciser ball for rehabbing and strengthening hands, effective for all hand sizes,excellent for conditioning the extensor muscles of the hands. Great for preventing hand fatigue, arthritis, strain, and early signs of carpal tunnel. Highly recommended for people with jobs involving sustained use of both hands such as athletes, musicians, and typists or anyone needing therapy. Economical, intuitive, easy to clean and portable for use in the clinic, on the road, in the office or at home. Learn How To Protect Our Hands Much activities making our hands prone to fatigue and injury everyday.This Finger & Hand Exerciser works as both prevention and rehabilitation for those with arthritis, rheumatoid arthritis, carpal tunnel, tendonitis, tennis elbow and those recovering from a broken wrist and tendon surgery. Specification: Size: Resistance Exercise Balls 4.1*1.7inch105*45mm Safety - Safely supports hot and cold therapy in refrigerator or microwave for use at temperature most comfortable and appropriate for the hand. Wash - With soap and water. Package: 2pcs Finger & Hand Exercisers with same colour