Features: brand new and high quality The massage bump design stimulates the hand acupoints, trains the grip and promotes circulation. It can massage the hands and other parts of the body to relax the muscles. Four-finger hole design, the finger hole can better fix the hand and prevent slipping. Finger training can better promote the recovery of each finger. The sphere feels good, hollow design, light weight, moderate hardness and good elasticity. The TPR material is safe and secure, has no peculiar smell, and is easy to clean. The size is small, convenient and easy to use, easy to carry, and ready to use. Specifications: Material: TPR Weight: approx.70g Color: Blue Diameter: approx.12x9x2.5cm/4.72x3.54x0.98in Quantity: 1Pc Note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1Pc x Finger Grip Ball