I like the size but as others have commented - after a few hours of being at my desk it moves backwards & I have to pull it forward so I can have my chair all the way up to my desk.
The mat is thick and made of quality plastic that's pliable. Unrolls and flattens within a minute or two under the weight of a chair. My chair easily maneuvers over the surface without the mat shifting and the lip provides good foot traction for getting up or moving forward or back. And you can back up in your chair without going off the mat which made it the perfect size for me. A winner!