Top of the line for low or medium pile carpets

Because it's polycarbonate and not vinyl, it is thinner and DOES NOT gas off with a horrible PVC stink (I brought home, initially, a PVC mat and had to put it in the hallway, before returning. I thought the gas would kill my cats!). Very hard and sturdy. Chair easily rolls and no scratches or scuff marks appear on the mat. The ONLY reason I didn't give Five Stars is because it was packaged flat--which is a bad idea. Like the video, it SHOULD BE packaged rolled up. I ended up having to roll it up and borrow tape to get it in my car. Now that it's been in use for a few months, great product!

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