Healthtrek Stress / gel exercise ball is helpful in hand and finger exercise for grip strength. It gives dexterity, mobility and fine motor skills. It is pleasant to touch and returns back to its original shape after each squeeze. It makes the fingers more active and calm your mind through the pressure points in your palm. Made of silicone gel with an ergonomic design and unique textured surface, easy to clean, can be repeatedly compressed without losing its shape.