Use the Xzyppci Grip Strength Trainer to increase grip strength and improve hand health,By exercising your hands,fingers,wrists,and forearms,you will increase strength, making your hands stronger and lifting heavier weights.At the same time,the use of exercise hand grips,regular strengthening training,can also prevent or reduce some hand pain and muscle fatigue. Different levels of resistance grip hand grip resistance ranging from 50-300 pounds,Increase in 50-pound increments to meet everyone's needs.You can choose the right grip according to your needs and exercise to gradually improve your grip strength.Portable design The grip arm easily fits into your pocket or backpack,so you can take these lightweight portable hand grips with you wherever you go,and perform hand exercises anytime,anywhere.