With their Pix Smart Grid Interfacing, Quiltsmart has made it easier to quilt mosaics, pixels, watercolors, and patchwork. This double-sided, fusible, non-woven interfacing allows you to sew from X to X for easy alignment. You can fuse fabric squares, fold on the lines, and create perfect intersections. Each pixel measures 1-1/2" and creates 1" finished squares. With its lightweight feel, it won't add bulk to your project. Please note the Pix Smart Grid Interfacing is sold by the panel, and each panel features a 12 x 21 grid.