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