There's also nothing worse than having your cutting mat with incorrect markings. I bought this 4x8 mat to fit my cutting table only to realize later that as you move along the markings to the other end, that it's no longer correct so I've gotten use to using either my rulers or tape measure to check the size before I cut. I have markings on both sides but I haven't checked to see if it's incorrect on the opposite side too. The company I ordered it from is no longer in business. I wonder why????