Product Description Size: 53*53mm Color: yellow+red+blue, orange+blue+green Material: TPR Package Contents: 3 * grip ball 1.【Top Material】: 3 pcs hand therapy exercise ball silicone finger strength relieve pressure grip balls focus toy gift for elderly adults children anxiety attention. Made of high-quality and environmentally friendly TPR material. This ball set is characterized by high elasticity and durability, non-toxic and odorless. 2.【Ergonomic】: Designed according to human engineering, it fits perfectly in the palms, is soft and comfortable to squeeze for a long time. Prevents stiffness, increases flexibility, and reduces joint pain. Ideal for hand massage or wrist exercise. 3.【Multifunctional】: Hand-primary strength training and rehabilitation training toy, release your body and mood so you can focus on your work. These balls are excellent for hand exercises, strengthening finger strength, stress relief, therapy, blood circulation and more. 4.【Portable】: Mini size, light and small, these balls are convenient for you and you can exercise with your hand at any time. When you walk, travel (car, plane, bus), in the office, school, watching TV or anywhere else you want to exercise. 5.【All Hands Fit】The perfect size is very suitable for large and small hands, elderly and young, and it is also a type of training device that is very popular among fitness, rock climbing, tennis and other enthusiasts as well as arthritis patients.