Expeller it to be firmer. Was leaving caster impressions so I put a heavy duty piece of cardboard under it and problem solved. Our carpet/pad is only about 3/4” thick max to.
Fits perfectly with my desk and chair. Firm fit — no sliding.Only problem that I have found in the past is that you need to replace the mat every 2-3 years as it wears out. If the manufacturer can solve that problem using better plastics then you have a real winner.
This is a nice mat and it arrived flat. It's shiny and thus stays looking new longer. It doesn't move around on the carpet when I move my chair. I like it a lot.