High quality. The finger trainer is made from 100% safe silicone. It is not easy to tear, does not emit toxic substances, has no taste. t, can be washed and has a long service life. Three levels of resistance. Light gray finger exercise band can bear 3kg, dark gray band can bear 4kg, black can bear 5kg. You can gradually exercise your hands. Small and exquisite. Small in size, easy to carry, can be stowed in pocket and bag, you can exercise anytime, anywhere. Easy to use. It is ergonomic and stretchable to improve the fingers of athletes (lovers of climbing, tennis, baseball, boxing, tennis, etc.) and musicians (guitarists, bassists, pianists and violinists). Quality products and services. If you mind the product quality, we will offer 100% replacement or money back. Features - This type of finger spreader is suitable for office crowds, teachers, senior citizens, students, athletes, etc., or people who often use hand strength. - Special design, easy to use: the finger stretchers have 5 small holes to fit your fingers in it, which provide huge resistance to open your hand fully, it is useful for increasing the strength of fingers and hands. - It is small and practical, easy to carry, you can use it while walking, watching TV, traveling (car, plane, bus), in the office, in school or anywhere. - If you have rheumatoid arthritis, arthritis, tendonitis, etc., and are recovering from a wrist fracture or tendon surgery, this is an ideal choice. - A set of products has three resistance levels (soft, medium and hard), you can choose according to your needs to exercise, or you can start at lower intensity and step by step.