This protection completely fills its protective function. She already served me and saved my computer with an ink bath! In addition, after weeks of use, it still al air resistant and does not damage s. So I put a good grade for these reasons. As against what my disappointed, c is that c is not at all convenient for typing. I read comments like what c is not very annoying and we see that the difference is hard with or without protection. C may be true for simple operation and without the keyboard ... Yes, it is possible to write with. By cons, if, like me, you use the computer to take notes, where to type very fast, forget everything after this protection, or else remove for note taking (that is what I do) because c is very inconvenient. We write the blow more gently, and then they tend to make many mistakes. So here, I do not regret the buying, because I m still use it and that it is useful to protect, but it's just a shame that I have to remove the to take notes.