FIGHTINPC High Elastic Hand Squeeze Ball Arm Exercise Gripping Ball Hand Exercise Ball Good Elasticity Strengthening Finger Strengthener Training Muscle

Size: 10x6.5cm/3.93x2.55inch. Weight: 90g. Material: PU. Packing list: 1Pc Finger Exerciser Ball. Color: Yellow. Material: PU. Packing list: 1Pc Finger Exerciser Ball. Size: 10x6.5cm/3.93x2.55inch. Color: Yellow. Weight: 90g. 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