TheraBand Hand Exerciser Ball - Designed to strengthen the hands. wrists, and forearms. The Hand Exerciser is available in five progression level options that can be stretched, squeezed, and pinched while maintaining shape to strengthen grip, increase dexterity, and improve mobility. Training with TheraBand Hand Exercisers is beneficial for those who suffer from arthritis, overuse injury or engage in activities that require extensive use of the hands, wrists, and forearms. Microwave or freeze the non-toxic, hand exercisers for hot or cold therapy. Features: Soft hand exerciser ball for improving grip strength, hand dexterity, and motor skills. Can be heated or cooled to provide therapeutic relief while performing Exercise. Great training tool for rock climbers, golfers, tennis players, piano players, and guitar players to improve hand strength and function in the fingers. Non-messy alternative to hand putty or stress balls. Quantity: 1 Size:Standard: 2" D Color: Yellow - X-Soft / 1.5 lbs. force at 50% compression Red - Soft / 3 lbs. force at 50% compression Green - Medium / 5 lbs. force at 50% compression Blue - Firm / 8 lbs. force at 50% compression Black - X-Firm / 17 lbs. force at 50% compression Indications: beneficial hand exerciser overuse for those who suffer from arthritis, injury or engage in activities that require extensive use of the hands, wrists and forearms. Also a great training tool for rock climbers, golfers, tennis players, piano players and guitar players to improve hand strength and function in the fingers. Other Rehabilitative Use Options: The TheraBand Hand Exerciser can also be added to foot and toe rehabilitation. Use the Hand Exerciser to strengthen toes and treat plantar fasciitis and other causes of foot pain. Care & Cleaning: Hand wash with a mild cleanser. Options: Standard Yellow - X-Soft (26020) UPC: 087453260205 Red - Soft (26030) UPC: 087453260304 Green - Medium (26040) UPC: 087453260403 Blue - Firm (26050) UPC: 087453260502 Black - X-Firm (26060) UPC: 087453260601