These hand grips rings are made of premium silicone included 3 different rings from 20lb to 40lb, tear-resistant and odorless, which can gain strength in the hands, wrists and forearms, and also can massage, perfect for men, women, seniors, teens, athletes and musicians.
There is no user's manual.
1. 3 different grip trainer ring set includes 20 lb, 30 lb, 40 lb rings.
2. The grip strength trainer rings are made of premium silicone material that is odorless and latex free, no odor, no edges, no noise.
3. Convex point side and smooth side design.
4. Hand exercise rings build strength in the fingers, hands, wrist and forearms, perfect for athletes, musicians and physical therapy patients.
5. Small and portable, you can use the hand girp at home, office or carry to anywhere.
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