The grip ball of e-gg shape is comfortable to hold in hand, well rebound resilience fits for hand therapy and stress relieve. There are different resistance levels of different colors for your choice.<br/>Features:<br />E-gg shaped for a comfortable fit in your hands. <br />Made of high-quality skin-safe silicone, well rebound resilience.<br />5 types of resistance levels, you can choose the strength of the grip ball according to your needs.<br />Easy hand exercises and finger exercises help strengthen your hands and fingers, increase your r-ange of motion.<br />Relieve muscle tension and ease stress when squeezed or manipulated by the hand and fingers.<br/>Specifications:<br />Material: Silicone<br />Color: Yellow, Orange, Red, Blue, Green (optional)<br />Resistance Levels:<br /> Yellow--15 KG (33 pounds)<br /> Orange--20 KG (44 pounds)<br /> Red--25 KG (55 pounds)<br /> Blue--30 KG (66 pounds)<br /> Green--35 KG (77 pounds)<br />Item Size: 55 * 44mm / 2.17 * 1.73in<br />Package Weight: 55g / 1.94ounces<br />Package Size: 53 * 53 * 53mm / 2.09 * 2.09 * 2.09in<br/>Packing List:<br />1 * Grip Ball