This item is made with 1/4in thick acrylic. Designed by machine quilting author and teacher, Angela Walters, Squiggy is the go-to tool for machine quilting serpentine lines and wavy designs. Features- Creative Grids® grip prevents slipping Black and White dashed guide lines are visible on all fabric colors Mirror image design allows you to quilt multiple width borders with the same tool Seam guides guarantee accuracy Stopping points ensure a continuous quilting design. Use Squiggy for quilting: serpentine lines in both directions in 2 and 3 inch borders and sashings; overlapping serpentine lines; varied serpentine lines; allover ribbons; ogees; clamshells and more! It is 1/4 inch thick so it works for domestic as well as longarm machines. View a video demonstration. Total Size - 4in x 6-1/2in, 1/4in thick