Not quite as sturdy as I hoped. Plastic sinks into carpet where you sit on the chair. Leaving divots in the mat. Every time you roll you have to roll across them.
I am very pleased with this chair mat which makes my drafting chair so much easier to move. Compared to the offerings at my local office supply stores this mat has a better shape (rectangle) larger size and came at half the cost. I am about 220 lbs and do notice wheel indentations in the mat after I've sat in one place for awhile but those indentations disappear over the next few hours (and I recognize that this is made of plastic not granite). It is so much easier to move my chair now than when it was resting straight on the berber carpet. At this pricepoint I recommend.
We bought this to use in our CAR you can not find good plastic floor mats so we cut this up and have two in the front seat of our car We used the old one for a pattern and it works GREAT!!!