I bought one of the giant Olfa mats from Joanns. Do you realize that is comes in 2 pieces and have to be clipped together. I found the seam where the 2 pieces meet annoying and a problem. I took it back (sent it back). I have 2 of the 36" ones and like them very much. Stay away from the white mats as they will really reduce the life of your rotary blades.