Enhance grip strength and flexibility: The hand movement loop can enhance the strength of fingers, hands, wrists, and forearms. Various activities, including squeezing, pinching, and stretching, can improve the flexibility of fingers and hands. Perfect for athletes, musicians, and physical therapy patients. Gradual resistance level: As the grip improves, the gradual resistance level can gradually increase the difficulty of each training. It can also be used for effective interval training, alternating between three resistance levels in one training session. Perfect size for comfortable fit: suitable for adult hands, suitable for grip training for both men and women. Durable anti slip silicone structure: The grip enhancer is made of high-quality odorless and latex free silicone material. The anti slip ring also has tear and crack resistance properties and can be used for a long time.