Feature:1, Hand Grip Exerciser improves hand, wrist and forearm strength.2, Ergonomically designed to fit small to large hand sizes.3, Suitable for the elderly, the office crowd and sports enthusiasts to prevent the mouse hand nemesis.4, Safe grip sponge handle fits your hand and give you a best comfort feeling.5, Hand Grip can be used anytime or anywhere. Small, lightweight and portable, you can carry it with you to exercise anytime.6, Chrome ally steel spring with great tensile force provides you a best Hand Gripper Strength Device.Specification:Material: Foam, spring steelcolorRed/ BlackUsage: Strength TrainingFeature: Light Weight, Comfortable, convenient and safeInstructions for use:1. Grip is a kind of exercise people wrist, arm strength of small fitness equipment, a lot of men at home will have a basic grip, easy to practice.2. The use of hand grip position, including one hand, hands, grip, under the grip, double clip and so on. Not the same use of the position to practice the corresponding parts are not the same.3. One hand to single-arm practice-based, hands can practice arms to force. Other positions to practice the corresponding parts.