| Grip strength trainer for adults, therapy ball for hand spasms, arthritis, stroke, stress ball for cell phone lovers, squeeze ball for ADHD sufferers.The football shape of the four finger holes is more in line with the ergonomic design of the hand, and it is easy to hold. The hole diameter is 0.9in, which is suitable for finger exercises of most adults.Strictly selected TPR silicone material, safe to use, no smell, not easy to break.Size 4.7*3.9 inches, grip strength 20 lbs, easy to carry, easy to use, ready to use at any time.Beautifully packaged, it is your first choice as a gift for your relatives and friends."All of our products go through strict quality checks. If there is any quality problem … | |