I used this string saver for 4 years, and I absolutely loved it. It saved my strings and it stayed between the strings. It used to be an excellent product but ever since they changed the material, it became worthless. The new string saver material is so soft it does not stay in place. The new material is so soft the strings are deforming the savers and it is falling out from the strings. Playing just one set I have to replace 6-7 string savers, it is very frustrating! Using same racket, string and tensions!