The diffuser itself is very good, my hair dryer is worn without problems. Dries quickly, gives volume, does not cling to hair. The prices would not have been for him if not for one but. He's falling off the hair dryer, especially hot. These Tipo fixing rubber bands very badly hold the diffuser on the fan. As already written here, maybe if the ribbed was located horizontally, not vertically, it would be well kept. In general, we need to think of something to attach it. Oh, by the way, it's a terrible package. As the diffuser came whole, I do not know, just a miracle, for the packaging was crushed completely.