Not wanting to damage the carpet pile under my rolling office chair I checked out Staples and found the 36" x 48" clear mat which is a perfect fit and my chair rolls easily on it.
I bought this product because of the majority of the reviews were great. A few did remark of how the mat gets indentations from the chair rolling on it. Which I am gaving problems with. Also the mat constantly moves. I am not happy with my purchase. Wish I could return it!
Matt is too thin period. Chair wheels dig deep into the matt/carpet. Much different than the smooth glide of my previous matt (worn out after 10-yrs). I guess it provides carpet protection but it's definitely not a "smooth glide". I don't recommend buying.