Professional Training Tool : This grip ball is designed for hand exercise, helping exercise hand strength, improving finger flexibility and grip power. Soft & Friendly Design : The slow rebounded PU materials a gentle yet effective workout, perfect for early stage exercise, ensuring comfort and while building hand strength gradually. Hand Exercise Option : Ideal for adults, seniors, or those with weak hands, this grip ball doubles as a stress relief toy, supporting multiple relaxation needs. Compacts Size : With a 7cm diameter, this light weight grip ball fits easily in bags, allowing convenient training at home, work, or on outdoor using. Package includes: 4Pcs Finger Hand Exerciser