They are smooth and protect the floor (carpet) perfectly, and for glass mats, they were reasonably priced.

I highly recommend it to protect carpet or floors.

This seems to be the solution to protect my new carpet

(My office floor has fairly plush carpet and padding).

This will absolutely protect my new carpet.

This was a terrific solution for my office which has beautiful thick carpeting

I purchased this product to lay over medium carpet and place a heavy computer rack-on-wheels on it so I could move it easily

I wanted a smooth rolling chair mat for our ultra plush carpet and this nailed it; however, it is slippery with standard casters, maybe rubber ones would slow it down, also a bit cold in the winter time and it stands out a bit against the carpet

Works as it supposed to and looks much better than traditional plastic chair mats that kink and bend