We all appreciate the trimming done by the serger, but it can create a mess. This catch-all notion collects the trimmings in a handy catcher. It's easy to empty, too. 11-1/2" x 12" foam backed acrylic pad fits snuggly under serger and helps absorb vibration and sound. The bag slides out for easy disposal of trimmings and a handy ruler is etched in for quick measurement checks. Fits under any serger.