About 7cm in diameter, for adult use.

● Made of chronic elastic PU material, the grip ball strengthener is soft to and highly elastic.

● Rehabilitation training for hand function problems refers to grip strength, small hand muscle strength exercises and fitness.

● The grip ball strengthener features small intensity and good elasticity, which is convenient for the user to have grip and finger exercise.

● The ball won't fall off and is good for training. It is equipped with six finger holes for easy wear and allows you to adjust the tightness.

● Suitable for small hand function damage, finger strength and grip strength training.