Our local Len's Mills store has large (24 X 36) or maybe a little bigger Fiskars cutting mats on sale for $40 Canadian (regular $65). They are yellow on one side and pink on the other and both sides have grids and numbers. I've never seen these mats before and wonder how they compare to the more familiar green OLFA which retails around $70 Canadian. Has anyone used these mats and if so, what did you think? They seems to be a little thicker than my OLFA.