The Janome Large Muffling Mat provides great sound and vibration suppression for a more enjoyable sewing experience. The Janome Large Muffling Mat backing is an absorbent fabric and the top is gray with the Janome logo on it. This mat also provides stability and keeps your machine from moving on a table surface. It measures 24" x 14.5" and is ideal for larger machines that are more than 17" wide such as Continental M7, Horizon Quilt Maker Memory Craft 15000, Memory Craft 14000, 12000, 11000, 9450, 9400, 8900QCP, 8200QCP, 6700P, 6650, 6600, 6500, Skyline S3, S5, S6, S7, S9, MB-4, MB-7, 1600P, 550E, 500E, 400E.