<p>ERGONOMIC DESIGN: The oval shape for a comfortable fit in your hands. With different lengths of five fingers, allows all fingers to be trained at the same time, which improves the effect. Helps disperse hand stress points and achieve long-lasting training. term without pain.</p> <p>CROSSED FINGERS DESIGN: If the user's fingers are not flexible, the cross-finger design can effectively prevent the ball from slipping. Hand movement is more natural, improving grip strength and achieving the effect of restoring hand strength.</p> <p>BREATHABLE WITHOUT STRAIN: Raised bumps can effectively reduce the contact between the skin and the sphere , the middle is ventilated and breathable, and the hands will not be sultry. Do not feel uncomfortable when training hand strength or anxiety.</p> <p>HIGH QUALITY MATERIALS: Using the world's new open molecular structure PU material, the greater the strength, the higher the elasticity, regardless of early, middle or late training, eliminating the trouble of frequent replacement.</p> <p>PERFECT FOR: Prevent tension, increase flexibility and relieve joint pain. Great stress relief toys for adults and children. finger extensors healthy exercise, prevention and correction of contracture stiffness, finger extensor muscle paralysis improve muscle strength and joint activities of relevant parts through training.</p> <p>Size: length 10CM, diameter 6.5CM</p> <p>Color yellow</p> <p>Quantity delivered: 1 piece</p><p>Note: The data is manual measurement, please allow 1-3cm error, due to differences between light and screen, there will be a certain difference in color, the specific received in kind shall prevail.</p>