Staples Union & Scale FlexFit Desk Converter Review: Reliable Riser
The included keyboard rest is optional to install, though the whole thing is designed to work together. It's a little annoying. I wish you could roll the tray into the riser to hide it, which would go a long way in making the FlexFit look a little more elegant, and could also help with storage. You also can't adjust the height of the tray, so while I didn't have issues typing on a keyboard, I found my wrist cramping up a little when using my Apple Magic Trackpad because it was a little too low.