Enhance Strength: The grip strength ball can exercise arms and wrists, exercise palm muscles and finger flexibility, strengthen hand exercises, and reduce joint pain. High Quality: Using high-quality tpr material, it is safe, odorless and tear-resistant. It can be squeezed repeatedly and can be restored immediately. The sphere is crystal clear like jelly and has a uniform texture. Ergonomically Design: The grip training ball adopts an ergonomically designed egg shape, which conforms to the shape of the human hand and makes the grip more comfortable. Easy to Carry: The grip strength ball is small in size and can be easily put in a bag. You can use it whether you are walking, traveling (car, plane, bus), in the office, school, watching TV or wherever you want to exercise. Package Include: 4 Pcs Hand Grip Strength Ball.