product description 1.Functional training-exercise every day, squeeze and release daily anxiety, which helps increase blood flow, while greatly improving the strength and speed of the hands, wrists and forearms 2Professional design-the handle is equipped with sweat-absorbing and soft foam padding, which provides you with a comfortable gripping experience while protecting safety 3.Applications-Unlike most trainings, you can perform these exercises at home, office, outdoors or even walking, anywhere during travel, turning your work and downtime into a productive exercise course 4.Portable-small and convenient, easy to carry. You can put it in your pocket, handbag or sports bag and use it anytime, anywhere 5.Efficacy-using a grip enhancer can help relieve stress. Using a grip enhancer can heal and relieve pain. It is beneficial to people suffering from arthritis, tennis elbow and carpal tunnel syndrome, etc.