Liberty fabric, a newer print called Yoshie. This print comes in hot pink too (I bought some of that to make something for Lois), but I went for the dark charcoal grey for her coasters, and used white linen on the undersides. I should probably top-stitch them to give them more of a finished look, but I'm nervous to do it because I'm still not so great at a straight line. If the top-stitching is sloppy, then the whole thing looks sloppy to me. So I'll give that some more thought.