Description The hand grip balls are perfect for athletes and common people to increase finger, hand and forearm strength and stamina. Ergonomically designed, it is made with and durable material. Perfect hand workout that can be done in your home or office and will build your hand muscle and grip strength. Features -Color: Random Color -Material: Silicone, -Size: 9.00X8.00X2.00cm/3.54X3.14X0.79in -Hold the strengthening balls tightly to help you decompress after long hours of work or study. -These balls can exercise and strengthen the strength of the fingers, hands, and wrists, and relieve muscle tension. -They can prevent stiffness, reduce joint , and increase flexibility. -It is easy to carry, easy to use outdoors, easy to use, and simple to operate. -The creative design will give you a wonderful experience and bring you a mood. Hold the strengthening balls tightly to help you decompress after long hours of work or study. These balls can exercise and strengthen the strength of the fingers, hands, and wrists, and relieve muscle tension. They can prevent stiffness, reduce joint , and increase flexibility. It is easy to carry, easy to use outdoors, easy to use, and simple to operate. The creative design will give you a wonderful experience and bring you a mood.