Just placed it on the carpet last week to replace one that I had for many years... This new one is a good size but it looks like it may not be as thick as I would have hoped. On that note I am concerned how long it will last. Just the weight of the chair and not a very heavy chair has caused dents in the mat...let's see what happens when I sit my chair and use the mat.
When I asked customer service where the chair mats were she said what size. I told her and she said I have one that size right here behind the desk.. I purchased the one she had and flattened it at home for 2 days and put it at my desk. I think I bought the wrong one because it is very hard to roll my chair. I have to get up to move it. But I used it already so I'll deal with it.
This floor mat developed divets where the chair sits within hours of normal usage. The plastic is not hard but somewhat maleable and so is difficult to roll on. I would not recommend this item. Considering returning since it’s useless but just don’t feel like the hassle. Not a good quality product.