Description: Two strengths are available: 10 lbs, slow , low strength, soft feel. 20 pounds, natural , moderate hardness and softness. Multifunctional stretching grip ball: two-in-one training of hand grasping and stretching, split finger design, uniform force. Enhance hand strength and improve finger extension. With non-slip particles, compact small bump particles, comfortable and non-slip, not afraid of sweating. Material: PU cotton material, soft and tight, it responds with a single touch. High elastic silicone finger caps are used, which are flexible and not easy to break. The stretching effect is good, and it trains the outward extension of the fingers. Applicable people: Suitable for hand injury rehabilitation, weak hands and tremors, office decompression and relaxation, daily exercise for middle-aged and elderly people, suitable for finger stretching, grip strength, rehabilitation training. How to use: 1. Put the five fingers into the finger cuff first, and wear the finger cuff at the fingertips when using. 2. Hold to the bottom and slowly relax, and exercise in a cycle until the hand muscles are slightly sour. 3. The five fingers are stretched out to enhance the strength of the fingers, and the training of the hand support. 4. One support and one grip cycle exercise, exercise muscle strength to promote circulation. Specification: Material: PU silicone Weight: 10 lbs/20 lbs (for your choice) Size Chart: 11x7cm/4.33x2.76inch   Package Includes: 1 Piece Finger Grip Ball Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!