Material: Silicone.<br> Double force grip: diameter 7.35cm, solid silicone, different forces on both sides.<br> HIGH QUANLITY - This finger stretcher resistance bands made of environmentally friendly silicone, soft, non-cracking, thick, long life, not irritate the skin, silicone grip is non-toxic and tasteless, very washable and durable.<br> EASY TO CARRY - Strengthen the power of the palm and the flexibility of your fingers, this handle is lightweight, easy to use, and can be exercised anytime, anywhere.<br> USAGE AND APPLICATION- Grip and Stretch trainings strengthen your fingers, wrists and forearms. Improved gripping strength helps you get faster results in the gym and make you able to hold onto heavy weights. Grip strength is especially important for sports like gymnastics, fitness, tennis, golf, baseball, boxing, rock climbing and musicians like violin and guitar players.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store