if your foot pedal seems to be more active than you are, sliding and skidding along the floor, keep it in place with this non-slip skid holder. simply fasten the included velcro strips to the pedal, then place it anywhere on the cushioned pad. 11-1/4" x 17-3/4". translucent vinyl with pad.measures 11-1/4" x 17-3/4" flexible plastic mat fastens securely to mat with included velcro raised grip bumps on bottom hold it securely in place on carpet works with all sewing machine and serger foot pedals