Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mine fits poorly

It does keep your keyboard cleaner and the interference with typing isn't too bad. Unfortunately it is folded in the package and after more than a year mine hasn't flattened out completely. Typing over the fold (which lands over the cluster of keys to the right of the main keyboard) is annoying and since it doesn't sit flat on the keyboard there, it is much harder to read the key legends. It also tends to ride up around the edges.I called and wrote to the vendor and they basically said "gee, too bad."