OLFA Gridded Cutting Mat 18"X24"-

I'm very happy with this cutting mat. I also have a couple of the same brand rotary cutters as well, very happy.

I was trying to do some Christmas sewing when it became clear I needed a new cutting mat. I had two, one that was too small and one that was too large - it wouldn't fit in the space I had to work in. Fortunately, Olfa had several size mats to choose from, and I found one that appeared to be what I needed. It was ordered and arrived ahead of the estimated date of arrival and has proven to be exactly right for the task. It's not only the right size, it's a great quality as well.