Quite a bit thicker and stiffer than the standard chairmats and I expect being stiffer it will flex less and wear better over time. The thin standard thickness mats flex so much that they soon crack in the center and then need to be replaced. This was the thickest mat of this shape and size I could find and well worth the slight additional cost.
I've barely had this a month and already it's curling at the edges and sagging in the middle. I wouldn't buy this again. I should have pried the lock off of my wallet and gone for the more expensive but more durable one.