Product Name: High-strength wrist deviceColor: BlackSize: 57 cm * 31 cm * 37 cmMaterial: Advanced rubber + stainless steel springDescription: attractive appearance， has a strong three-dimensional， very convenient to use and carry， can be used in any place， major coordination Training wrist and wrist， suitable for playing basketball， boxing hand or wrist larger athletes can enhance wrist strength， promote blood circulation， adjust the frayed nerves.Wrist completely according to human hand shape and design. Uses time division one hand， both hands on the grip， lower grip， double clip， such as different training methods. With a small and light， easy to carry， when used without any restrictions， ready to Training your hand strength， relieve fatigue， muscles， strong muscles， increase blood circulation， long-term use， to help prevent rheumatoid arthritis， Training is an essential key body small instruments.