Word of warning: Because neoprene is squishy, if you put something heavy on top of the mouse pad it can leave indents in it ...

A fabric-covered rubber pad roughly 9" square that provides ... as essential as they were in the past. However, mouse pads often include wrist rests that people find comfortable.

and the wrist pad gel was less ergonomically sproingy than the old one's. But whatever. It got the job done. I tossed the old mouse pad and started using the new one. Then, a week or so ago ...