TPR handle, non-slip, comfortable grip. It is very effective for improving the speed, strength and strength of the wrist, hand, fingers and forearm. Excellent recovery and rehabilitation tool for arthritis, carpal tunnel, rheumatoid arthritis, tendonitis, tennis elbow, wrist sprains and finger or wrist fractures. The ergonomic and ambidextrous design makes it suitable for unisex, seniors, teens and teens, as well as children, depending on age. Perfect for anyone who wants to improve their hand strength. 1 This wrist exerciser is designed to improve wrist, finger and forearm strength, power and speed and is ideal for athletes, musicians, rock climbers, golfers and tennis players. 2 Made of high quality steel spring and nylon material, it has strong and durable features and long service life. 3 High elastic spring, super elastic, large bending, never crack or deform. 4 Plastic is the key material that affects the performance of the grip. Using plastic plastic has better sealing performance, more pressure resistance and safer use. 5 The exercise of the gripper can relieve fatigue, strengthen the muscles of the practitioner, promote blood circulation, maintain the blood circulation of the joints, and be less prone to inflammation. 6 This hand exerciser is lightweight and easy to carry to the gym, office or at home. 7 The grip is ergonomic, non-slip and safe. 8 Ideal for strength training, flexibility and balance combined with various exercise programs. 9 Helps you improve the flexibility of your movements, can be adjusted with different sizes of hands and arms. Size: 16x12.5x3.5cm