The Supreme Free-Motion Slider is designed to reduce friction and tension that occurs while machine quilting, therefore relieving shoulder strain that can accompany machine quilting. With its dual layer technology, the Supreme Slider features the original 100% Teflon top that slides with zero friction as well as the new self-sticking bottom that grips yet it easy to remove. Supreme Slider with New Tacky Back, includes free quilting designs, Free Motion Slider is 8 1/2" x 11", but can be trimmed to fit any sewing machine.