Eco-Friendly: Made of premium TPR material for a soft touch. Easy to clean, flexible and no deformation. Function: This grip ball helps strengthen fingers, arms, and wrists efficiently. It also supports hand and wrist rehabilitation exercises. Occasion: Ideal for daily training, palm massage, recovery from wrist fractures or injuries, carpal tunnel, tendonitis, stroke rehabilitation, and other therapeutic uses. Compact Size: Portable and lightweight design makes it easy to carry. Suitable for use at home, office, school, or on the go. Practical Gift: A great gift for adults, seniors, or children. Helps reduce tension, improve flexibility, and relieve joint discomfort. Specification: Material: TPR Material Whole Size: 11.5 x 11.5 cm / 4.5 x 4.5 inch Circle Size: Diameter 2.5 cm / 0.98 inch Ball Size: Diameter 6.5 cm / 2.56 inch Weight: 53g Package Includes: 2 x Finger Strengthener Note: 1. Please allow 1-3mm error due to manual measurement. 2. Enjoy your online shopping!