CASEDAO Keyboard Cover Skin for Logitech MK570 K350 MK550 Wireless Wave Keyboard, Ultra Thin Silicone Logitech MK570 Keyboard Protector-Black

Great item!! Several letters in my keyboard had worn off and I tried the individual stickers but they slide off the keys so this is a PERFECT solution!! Highly recommend especially for the price!!

Disclaimer: I've never used a keyboard skin before now. Maybe they all rock... This keyboard skin fits like a dang glove... NO!...it fits better than a glove; it fit's like skin. The fit is perfect for my M350 keyboard. It stays right where I put it. My keyboard has a little bump on the F and J keys so that I know exactly where my hands are all the time, and this keyboard skin doesn't inhibit that at all. I can still feel those tiny bumps with it over the keys. I can't believe it. I thoroughly tested it yesterday by dumping a few tablespoons of Coke on it by accident. After that, I wiped it off, removed it, double rinsed it, dried it and put it back on. Boom! It already saved me money, grief, or stuck keys. Once in a while (twice a month maybe) the skin gets a little too grabby and will hold onto a key, like the shift key, and make it more difficult to push or make it stick in the keyed position, but I just lift the skin and let it back down and it's fine again. From now on, I will always have these on my keyboards.

Fit perfectly. Lets me keep using my keyboard without having to replace it. Saves money over replacing the keyboard. Works much better than putting individual stickers on the keys (tried that already). Very visible letters and numbers. Only complaint is the letters wear out but I at my keyboard over 50 hours a week so I don't think that is too surprising. I bought a spare just so I have one when I decide the letters are too worn out. Have yet to wear out the rubber itself (no rips etc).

On the whole, I do like it. For the price, I will definitely buy another one. It has definitely fully protected my keyboard from food crumbs and After a year of daily use, my only concern is that black (background) and white ink on four of the keys are wearing off. These are the R, T, C, and V keys. No indication yet that it is going to affect the other keys.

I bought this because the letters were wearing off my keyboard but I didn't want to replace a perfectly good keyboard. I was going to replace the keys until I ran across this. It simply sits right on top of your keyboard. It is the best thing I have bought in a long time. Highly recommend