Although this says medium pile carpet it moves across the carpet as I stand walk or sit in my chair on it. I had to put my desk on it to keep it from moving. The chair casters do push in a bit but it does recover. I think it should be rated for low pile carpet. My carpet is a cut and loop lower pile with a good firm pad. I guess it's not that low of a pile.
Arrived at scheduled day. Good sturdy plastic mat. I recommend this mat. Check the carpet-mat thickness table before ordering. The table is very useful as it guides which mat type to purchase.
We looked around quite a bit for a rectangular chair mat for office carpet in this size and of all the places we looked this was the better price and was delivered the next morning for free! Very happy with the quality.