Features： 1、The stainless steel wire spring of the finger trainer can be adjusted freely, which can solve the problem of bending and unstraightening of fingers, finger injury, and finger sprain. 2、Made of stainless steel wire spring, stainless steel sheet and soft EVA liner, it is convenient and comfortable to wear. 3、After wearing, rely on the elastic force of the spring to straighten and fix the fingers. At the same time, the fingers can be bent strongly and can overcome the spring force for rehabilitation training. 4、Sponge lining, absorb sweat, breathable, protect the fingers from being scratched by stainless steel. 5、The steel wire spring bends freely and automatically returns to its position. It is lightweight, easy to wear, not easy to fall off, and no burden on fingers. Specification： Item Type: Finger Straightener Material: EVA + Stainless Steel Product Features: It is made of stainless steel wire spring, stainless steel sheet and soft EVA liner, which is convenient and comfortable to wear. After wearing, the fingers can be straightened and fixed by the elastic force of the spring. At the same time, the fingers can be bent strongly to overcome the spring force for rehabilitation training. That is, passive straight, active bending. Scope of Application: Suitable for insufficient straightness or bending of fingers after finger injury or long-term arthritis. Application: Finger sprain, fracture fixation, insufficient finger extension, hammer finger, tendon rupture, etc. Size Chart: Size Finger Circumference S Below 5.5cm / 2.2in M 5.5-7cm / 2.2-2.8in L Above 7cm / 2.8in Package List： 1 x Finger Straightener