I really shopped around for size and price and settled on this combination. It is fine but remember that the chair casters of anyone over 100 and some pounds will make indents in the plastic. I knew this and can live with it. To get a thicker mat costs a lot more money.
Better than no chair mat but a bit thin unless your carpet is the short/firm office type pile. Our carpet is a little plush and the mat develops dents if I leave the chair in one place for too long.