Rockler Anti-Fatigue Mat

I purchased these when I built my workshop approximately 7 years ago and they have held up well. I have a concrete floor and these mats prevent excessive strain on my feet and legs when working at the working bench and in front of power tools for an excessive amount of time. They are approximately 1/2" thick and clean easy. The only down side is that they have very little grip on the backside and tend to move from their placed positions.