I recently purchased a large desk with a separation and two openings for chairs. It sits on a 3/8" pile carpet. I bought one of these chair mats first liked it so I then purchased another identical one. I bought them on sale so it was a good value. So far they seem to be holding up well quality and thickness are adequate so I'm satisfied.
Floor Mat was delivered within 24 hours which was a plus. Unfortunately it was filthy on both sides and took me 15-20 minutes to clean it and remove the labels from it before I could use it. Overall not a good experience but the floor mat was in new condition once I cleaned it and I am happy with the product.
The carpet protector is very thin and leaves impressions of the roller legs of my desk chair. I haven't had this protector for a long time maybe a month or less. I can tell that it is not going to last.
This is almost useless because it is thin plastic and the chair wheels sink right into it. I thought I was getting something firm to help the chair rollers move in and out under my desk. NOT what I wanted at all.
The mat works great over our new carpeting. The chair rolls freely over it no problems. The mat is thick enough that it doesn't move from it position while moving the chair around. I highly recommend it.