This item was a great buy...just don't leave it rolled up in your car over the weekend when it's 90 degrees! It was very difficult to get it unwound and unwrinkled...had to leave it on the floor in the sun and it finally flattened out and then performed perfectly!
This mat is much smaller than the one we had before. It is much too soft and gets pockets where the chair rolls over it. The edges also curl. Wish I had purchased another one like I had before. It was harder and larger. This one was a waste of money for me. I would only recommend using this on a concrete or no pile carpet.