Applicable scene: whether you are an athlete, pianist, musician or bodybuilder. Whether at home, on the go, or in the office, this grip training device is what you need. Wellness: Release daily stress. Suitable for all ages, it relieves joint pain, stiffness and increases blood circulation, and is suitable for those who have to type or use a computer. Convenience: All ergonomic hand shapes are designed to fit all hand shapes. Portable and easy to put in a bag or pocket. You can exercise at home, office or anywhere! describe: A firm grip is essential for a range of sports including gymnastics, rock climbing and wrestling, as well as everyday activities like opening a can or carrying luggage. Grip strength can also be an important indicator of overall health. Grip strength is a predictor of muscular endurance and overall strength. Release daily stress. Perfect for people of all ages, it's easy to use and can be used anytime, anywhere. It can reduce joint pain, stiffness and increase blood circulation in people who have to type or use a computer. Material: foam + spring steel Features: classic fashion, comfortable feel, small and portable