My carpet is actually medium. I got the medium pile version but it kept moving across the floor. So I took it back and got this. Delivery was quick to my door in a day or two but it still creeps. I have a pile of heavy boxes by my desk and it crept under them until it is totally cockeyed. So I will have to lift up the boxes pull up the mat and reposition it about once a month. It also gets temporary dents from my chair wheels (good chair heavy me) which make it a little harder to move my chair while sitting in it But after about 3 months no cracks or permanent damage.