Style:Ball Shape:Oval Material type:Silicone Number of items:1 Batteries included?:No Package Dimensions:6 x 5 x 5 cm; 55 Grams Features: 1. This grip ball adopts high quality elastic material and textured surface, and gives a fantastic and comfortable touch feeling. 2. Perfect for training flexibility of fingers against stiffness and doing rehabilitation training, exercising hand muscle and enhancing hand strength. 3. Squeeze, roll or press the ball to relieve tension and reduce stress 4. Due to its Small volume and light weight, it is easy for carrying and you can relax your hand anytime, anywhere. 5. Suitable for those people, who are rock-climbers, body-builders, computer-workers, badminton and ping-pong lovers, etc. 6. This product has five different colors for you to choose, and their hardness are slightly different from each other, specifically, they become harder in this color order: Yellow, Orange, Red, Blue, Green. Specification: Material: Silicone Weight: Approx. 55g Color Option: Yellow, Orange, Red, Blue, Green Dimension(WxH): Approx. 44x58mm/1.73x2.28inch Color / Hardness Coefficient Yellow 15 Orange 20 Red 25 Blue 30 Green 35 Packing List: 1 x Egg Shaped Grip Ball About this item [Finger Flexibility Training]:This kids adults silicone massage ball is suitable for training the flexibility of the fingers to resist stiffness and perform rehabilitation exercises [Stress Relief Ball]: Pull or squeeze the silicone exercise ball or throw it on the wall, help you reduce pressure and relaxing yourself [Comfortable Touch]: This stress relief squeeze ball adopts premium elastic silicone with textured surface; It has a fantastic soft and comfortable touch feeling [Color & Hardness Optional]: Our hand exercise ball has 5 different colors for 5 different hardness levels; Yellow-15, Orange-20, Red-25, Blue-30, Green-35 [Wide Application]: This silicone stress grip ball is widely used for climbers, bodybuilders, computer workers, badminton and table tennis enthusiasts; Suitable for all ages [Finger Flexibility Training]:This kids adults silicone massage ball is suitable for training the flexibility of the fingers to resist stiffness and perform rehabilitation exercises [Stress Relief Ball]: Pull or squeeze the silicone exercise ball or throw it on the wall, help you reduce pressure and relaxing yourself [Comfortable Touch]: This stress relief squeeze ball adopts premium elastic silicone with textured surface; It has a fantastic soft and comfortable touch feeling [Color & Hardness Optional]: Our hand exercise ball has 5 different colors for 5 different hardness levels; Yellow-15, Orange-20, Red-25, Blue-30, Green-35 [Wide Application]: This silicone stress grip ball is widely used for climbers, bodybuilders, computer workers, badminton and table tennis enthusiasts; Suitable for all ages