I have had some expensive keyboard covers over the years, over four times the cost of this one, and this one is the best. I can't see it or feel it. Whether it stays clean on not, time will tell, but at this price, a new one would not be outrageous.I've had one of these on my main desk keyboard for two years, primarily to reduce noise but also to improve mechanical reliability vs dust. The plastic discolors slightly but fit and function are still good. Just bought a second keyboard and chose to get a skin for that one too.I finally had to break down & buy a new skin for my keyboard when the old one basically fell apart after constant use over 5+ years. Considering it received almost daily use, I think I got my moneys worth out of it! It's exactly what the description says, thin, clear & soft. And yes, it stood up to fingernails on it all this time. I don't know why others have said it doesn't fit but maybe I'm one of the lucky ones because it fits perfectly without the use of any tape at all & I'm super happy with it!Product as describedThis cover is indispensable if you own and use the Apple wireless keyboard. I use my keyboard for several hours a day and it gets dirty very quickly. The cover is thin and sheer enough to not interfere with performance. Once installed it doesn’t budge with use, a problem inferior key covers sometimes have. The fit is so seamless it looks undetectable, a major plus for those concerned with aesthetics. Only regret is not getting it sooner.Cuando lo compre tenía la idea que se pegaba al teclado pero solo se pone encima, más no se adhiere como tal. De igual forma cumple su propósito que es proteger el teclado. Creo que calidad vs precio esta aceptable. Adicional debo indicar que me enviaron por error un producto y al pedir el reemplazo Amazon fue muy diligente en enviarme el producto correcto directo a mi casa en Panamá con UPS.The fit is PERFECT - amazing - invisible and undetectable. I am impressed; a huge improvement over my last cover.I’m a bit disappointed by this item, but it seems to be the standard design for keyboard covers these days. I had a very old one from a long-dead keyboard that actually fit over the keys perfectly AND wrapped around the sides, making it virtually impossible to get wet. This one doesn’t do that, and apparently, none of them do any more. It does fit perfectly around the keys (I have the Apple Extended Keyboard), is much thinner and clearer than my old one, but doesn’t seem to quite do the job I wanted it to do. The edges of the cover only extend around two millimeters short of the keyboard case’s perimeter, so if you spill something, you had better hope it’s not much and hits dead center of the keyboard, otherwise the moisture could wick around the edges and get underneath the cover. Not good for a product that purports to protect. I will say that the feel against the fingers is superior to my old one, virtually identical to typing without one and easy to get used to. Thinner and clearer material (silicone?) that doesn’t seem as likely to yellow with age. A few pieces of sticky tape are included to prevent lifting of the cover, but I’ve yet to use them, as they won’t prevent seepage around the outer edges. It will DEFINITELY stop things like like dust, hair and crumbs (yes, I eat at my computer, just like the rest of you) from getting between the keys, but I dread the day (and it WILL come) that I spill a full glass of liquid on my keyboard.For just a few pennies more, this could be an absolutely flawless FIVE STAR product. But for now, I’m only going to give it an average rating of three stars, as it appears to be NO BETTER than other covers that cost less. HEY, PRODUCT DESIGNERS… pay attention to this; engineer it to wrap around the edges and you could easily charge two or three bucks more of pure profit. After all, you’re in the business of making protective covers, not keyboards. Get it right, it ain’t hard to do.Es un buen producto con excelente calidad.El único punto en contra es que al ser tan largo, el material se tiene que adherir con unas tiras de adhesivo las cuales incluye; pero al ser TPU translúcido se pueden ver. También tuve la necesidad de cortarlas para ajustarlas al tamaño adecuado.Not bad, good fit and does the job by keeping dust and smudges from getting on and in the keyboard which is the primary aim.Takes a little getting used to for typing once applied but overall I’d buy again, it’s a well designed and useful product.good product, especially considering the price point. It's lasting longer than I expected it to given the low priceThe texture is different from other ultra thin Apple keyboard covers I have had in the past. It has a sheen and hard plastic feeling to the touch. I do not like it. It feels cheap.Pienso que es un buen producto. Ajusta perfecto en el teclado a pesar de que mi tecla de Enter es vertical y no horizontal como la de la funda. No obstante, encaja perfecto y no se siente la diferencia.