Description Hand Exercise Ball build strength in the fingers, hands, wrist and forearms while reducing stiffness and joint pain by stimulating blood circulation in the forearm and hand. Perfect for athletes, musicians, office staff and students, as well as those with carpal tunnel and rehabilitation needs.It can reduce hand soreness very well and stimulate the tactile nerve of the hand. It makes your hands feel very stress-free. Features -Color:Violet, bright red, sky-blue -Material:PU and sponge -Size:7.50X7.00X4.50cm/2.95X2.75X1.77in -Hand Grip Strengthen Ball, help to reduce stress after working or study for a long time. -Portable design, perfect hand workout that can be done in your home or office. -Small and lovely design, Ball is recommended as a daily stress-relieving product, and also recommended as a gift! -You can easily hold this finger training ball wherever you are, very practical. You can use it easily. -Made of good materials, high elasticity which is durable and lasting for use.Packing list3 x Hand Exercise Balls