It is too flexible. Wheels of chair sink into it and the chair does not move smoothly over the surface. Chair will not roll well at all. Mats I have had in the past were hard plastic and the chair wheels could move smoothly without sinking into the mat.
Didn't even rate the one star I gave it. This is not strong enough to roll a chair on. There are depressions in it after sitting on the chair for a while. Do not recommend this product.
The last one was very durable. I really saved the carpet under the desk. I hope this one holds up as well. It seems very "strong" & was easy enought to handle & roll in transport. It seems to fit very well. Thanks.