Improve circulation: the grip strength trainer can activate the meridians of the hand, promote blood circulation, eliminate fatigue and promote sleep. Multifunction: the grip strength trainer grip can effectively improve your grip and hand strength, quickly build wrist and forearm endurance, biceps, triceps, ligaments and shoulder strength. Promote Recovery: Wrist strength trainer with health effect, has certain auxiliary effect on upper limb rheumatoid arthritis and shoulder periarthritis, helps injured sportsmen. Use for office workers: wrist brace suitable for office workers, improve abdominal compression, limb numbness and less activity, prevent brain oxygen deficiency, dizziness, chest tightness and fatigue symptoms . Excellent nt ABS: Handle reinforcement made of high quality ABS material, sturdy and firm, which can effectively exercise the arm while improving flexibility.