I purchased the most expensive mat that was for 3/4 inch pile carpets. The mat that I received was thin and the nubs under the mat were not even 1/8 of an inch long. This mat was for a person that weighs 106 pounds and her chair leaves dimples in the plastic. I will not purchase another mat from Staples.
I am stil lstruggling with the desk pad which was rolled up when I bought it. It is taking forever to flatten it and very uncomfortable. You used to hang them flat from a rack. it was a mistake to change that.