Features:1. Improve blood circulation: hand grip strength trainer can activate hand meridians, promote blood circulation, eliminate fatigue and promote sleep. 2. Multifunctional: grip strength trainer can effectively improve your grip and hand strength, quickly build up the endurance of wrist, forearm, biceps, triceps, ligaments and shoulder strength. 3. Promote recovery: wrist strength trainer with health care effect, has a certain auxiliary effect on upper limb rheumatoid arthritis and shoulder periarthritis, helps injured athletes. 4. Use of office workers: the wrist strengthener is suitable for office workers, improves abdominal pressure, limb numbness, reduces activity, prevents brain hypoxia, dizziness, chest tightness and fatigue symptoms. 5. Excellent ABS:The hand grip strengthener is made of high-quality ABS material, sturdy and durable, which can effectively exercise the arm while improving flexibility. Specifications: product type: arm strength trainer Material: ABS Scope of application: suitable for women, young athletes, elderly, arm exercise while improving flexibility. Package List:1 x Arm Strength Trainer