Grip Strengthen Ball, made of PVC material, and touch comfortable, it is very easy to carry. Exercise and strengthen hands, fingers, wrists strength so that and muscle tension from computer work. Finger design makes it more lovely. Hand therapy exercise ball builds strength in the fingers, hands, wrist and forearms. Features -Color:Red -Material:PVC -Size:8.00X7.00X4.00cm/3.14X2.75X1.57in -This Handgrip Strengthening Squeeze Ball is perfect for all adults and teens who overuse their hands, thus them to feel tired. -It can hand soreness very stimulate the tactile nerve of the hand. It makes your hands feel very stress-free. -The undulating finger separation design helps the fingers to be placed in the proper position of the pressure ball, which plays the role of finger separation and prevents bed . -At the same time, the exercise ball is suitable for different fingers, you can use it easily. -Great tool: This Ball workout is for , carpal tunnel surgery, . Package list: 1 x Hand Exercise Ball