Features: *High-Quality Material: This product is made of high-quality material, which is durable and wear-resistant, not easy to break, and can be used for a long time. *Easy to use: Just put the rings on your finger, then apply force and release to practice your grip. *Adjustables Strength: The silicone grip strengthener is multi-strength adjustables and can meet the needs of different sports levels by adjusting the grip strength. *Portable design: This wrist tensioner is small and lightweight, easy to carry, and will not take up too much space in your pocket or bag. *Wide Application: Can be used for athlete workouts, rock climbing, finger and forearm exercises, muscle strengthening, sports training, fitness, etc. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: Environmentally friendly silicone nylon adjustment strap Size: 12cm*11cm, hole diameter: 1.8cm, side height: 2.8cm Package List: 1/2pcs x Finger Exercise Trainers