I work from home so my floor mat gets heavy use. I have short nap carpet over padding. I used the staples paperclip test and measured carpet and pad at exactly 3/4". Based upon this measurement I ordered this mat. The mat is much thinner and more flexible than the floor mat it replaced. At first I thought it was way too thin but it is more flexible. So I concluded that perhaps it will trade thickness for flexibility resulting in durability. I had a hard time justifying the next floor mat up at twice the price. Time will tell if I made a good choice. If it falls apart I would have been better off with the more expensive mat.
At first I thought it would be to big but the staff person loves how much wider this is. She rolls from her desk to a hutch that holds her computer. The first thing she said was it fits.
My fault for not measuring first but this is about 6" more narrow than the last one I had and that 6" makes a difference when swinging (or trying to swing) the chair around. Also mat is too soft and chair wheels sink in.
I bought this to replace a pad used on commercial carpet thinking it was as good as advertised. When it arrived it was exactly the same as one purchased locally for commercial grade carpet. I should have saved my money.