Mat is way too soft Castors leave big indents. Not happy with it. Unfortunately I had to cut a notch in it to fit around desk leg so I can not return it or I would
The chair mat that I purchased was one that should work well with high pile carpets. It crawls and bunches up when it crawls up against some thing such as a desk. I wish I had'nt bought it. Not happy with the purchase. It needs to be twice as thick to be stable enough.