Description: 1. Ergonomic Design: The length of the 5 fingers of a person must be elliptical if you want all 5 fingers to be stressed. 2. The shape of the sphere is more suitable for the entire palms. It helps to distract the palms of the hand during training. It is not too tired to train the palms for a long time. 3. String finger design will not slip. 4. Innovative material: Good elasticity, no deformation. 5. Works as a hand therapy ball light and medium tensions for increasing strength and range of movement. Perfect for late stage exercise rehabilitation of all finger, thumb, hand, wrist, carpal tunnel, forearm and elbow conditions and it is your super-easy hand strength training. 6. Exercises the frequently ignored muscles to guard against and help relieve the symptoms of carpal tunnel, arthritis and repetitive strain injury. Provides basic grip training for rehabbing hands. Specification: Material: PUsilicone Size: as shown Packing list: 1 x Finger Exerciser Ball Package List: 1 x Finger Exerciser Ball