I was cleaning my laptop recently and noticed that there was a slight rip in my old keyboard cover (the one that matched my computer clamshell cover).
They are pretty cheap, and made of silicone, so lasting for about two years is surprising with as much as I use my computer (my laptop is my main computer). So I made the decision to get a functional one—one that contains all the shortcuts! It is SO much nicer to type with this.