Super pleased with the quality of the mat for the price. Laid it outside during the summer under some boxes and it was flat in a couple of hours. Mid-pile carpet so the wheels do sink but after a week, I'm still able to roll around with little effort. Bought the large even though my workspace isn't huge and there are only a couple of inches of clearance on either side of the chair—would have been extremely tight with the small size.

I was pleasantly surprised by the carpet spikes. i think it's safe to say, if this is put down on carpet it's not moving! it took a while to get it warm enough to unroll after being rolled up in a box for delivery but that would be my only negative comment about this product. Gave me exactly what I needed!

Great Chair mat for carpet, I have been buying and returning this until I bought from shopper +.

Can not beat the pricing and quick shipment - definitely worth the purchase for no nonsense office supplies

Tiens vraiment bien en place.

Flattened out nicely. Made with thick durable plastic. My chair rolls nicely on it and the mat stays in place.