Specifications: The grip ball strengthener features small intensity and good elasticity, which is convenient for the user to have grip and finger exercise. The ball won't fall off and is good for training. Made of chronic elastic polyurethane material, the grip ball strengthener is soft to touch and highly elastic. It is equipped with six finger holes for easy wear and allows you to adjust the tightness. Suitable for small hand function damage, finger strength, and grip strength training. Item Name: Hand Exerciser Ball Material: Polyurethane Features: Finger Strengthener, Stress Relief, Portable Ball Diameter: 7cm/2.76" (Approx.) Notes: Due to the light and screen setting difference, the item's colour may be slightly different from the pictures. Please allow slight dimension differences due to different manual measurements. Package Includes: 1 x Hand Exerciser Ball(with Finger Strap)