Originally Posted by
citruscountyquilter
I love my Olfa mats. They are both in the 15- 20 year old range and still going strong. I had a Fiskar mat a few years ago and it warped terribly the first year I had it even though it was not subjected to hot sun and it was laid flat. I would not recommend a Fiskar mat. I can't speak to the other brands as I have no experience with them.
Maybe the quality isn't consistent. I have 5 different fiskars mats with the oldest going on at least 15 yrs with no warping. One of my oldest ones finally cut through in a few places but it was my most-used mat.