The Fons and Porter mat has no lines. It is not sold anymore but the one I have is still good, It is not my regular cutting mat. It is big so I take it to retreats with heavy use for three days twice a year. I think it was made by Omnigrid back in the day. Every new retreater asks where did you get this mat with no lines? I think the mat gets more pictures taken of it then the quilts. LOL