The mat slips on the carpet and when I get up from my chair I have to push it back into place. It doesn't crack like others that have the plastic 'spikes' on the bottom so in that regard it's an improvement over that kind.
Not really impressed. Product is flimsy thin plastic mat. Chair legs leave deep impression. Despite grips on underside of mat it still slides on carpet. Will never recommend this product to anyone and will never buy it again.