Review (3/5): Almost perfect for narrow keyboards
I have a Microsoft Sculpt Comfort Keyboard (with wrist rest removed) and a under desk keyboard tray (with a built in wrist rest). So I needed a mouse tray that was long enough to fit over the keyboard, but not be too long for the tray. This fits the bill! However, because it goes completely over the keyboard, not just over the key pad, the little black plastic feet that come with it do not make it high enough. Easily solved by gluing 3/4" high pieces of wood instead of the black plastic feet.