Note: Manual measurement has 1?2cm/0.4?0.8in error. specification: Item Type: Rehabilitation Ball_x000D_Material: Ok Fabric_x000D_Product Size:_x000D_Wrist Length Approx.28cm/11in, Rehabilitation Ball Diameter Approx.9cm/3.5in_x000D_(Regardless of Left or Right)_x000D_Product Function:_x000D_Prevent finger flexion spasm, prevent joint deformation and deformity._x000D_Controls the increase in flexor tension and muscle atrophy of the big fish._x000D_Prevent finger joint erosion._x000D_While fixing the finger in the functional position, it assists in training the flexibility of the finger joints._x000D_Use Range:_x000D_Cerebral trauma, cerebral palsy, paraplegia, cerebral hemorrhage, sequelae of cerebral infarction, various craniocerebral surgery or hand dysfunction caused by parkinson's disease and peripheral neuropathy. In addition, it can be used in patients with muscle weakness, abnormal limb tension and brain nerve injury. Features: 1Convenience and Comfort: The arc shaped aluminum strip is concealed inside, which is soft and comfortable and full of elasticity. 2Dual Functions: Fix fingers and wrists in functional positions, with dual functions of finger splitting and training. 3Removable: The grip ball with the finger hole sleeve can facilitate the user to grasp the ball, and the ball finger hole sleeve can be detached. 4Strength Training: Separate and train fingers; increase finger flexibility; prevent finger joint deformation and muscle atrophy. 5Wide Range of Application: Suitable for stroke, cerebral hemorrhage, cerebral thrombosis, cerebral palsy, cerebral trauma, cervical spine, etc. PackageList: 1 x Five Finger Wrist Sleeve 1 x Rehabilitation Ball