Description: Keep your fingers, hands & forearms supple and strong with simple daily exercises using these balls Improve grip strength, dexterity and mobility. These balls will also help improve strength, prevent stiffness, relieve joint pain and increase flexibility. Varying resistances of soft, medium and firm for your specific needs and personalized progression. Start with a soft and gradually move on to firmer as your fingers, Palm and Forearm acquire the required strength. Pocket size, easy to carry and use anywhere. Perfect for people working for long hours on computers, playing musical instruments like keyboards, piano, guitar etc. or sports person who play , badminton, tennis, squash, racquetball, golf etc Specification: Material: TPE Color: Blue Yellow Red Quantity: 3 Pieces Size : Approx. 7 x 5 cm/2.8 inch Package Includes: 3 Pieces Grip Balls Note: Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!