Black tempered glass mat that has a 12” x 14” workspace. Features imperial and metric measurements. You can fit a 12” x 12” sheet of scrapbook paper and still have an inch on each side of your workspace. The ruler grid is underneath the black tempered glass mat, so no worries that the measurements will fade over time. Each square on the black glass working area measures 1” x 1”. The bottom features a ruler that measures from 0” to 14”, the side measures from 0” to 12” and the top has a zero displayed in the middle allowing you to easily center your projects. A removable, durable non-stick area that measures 7½” x 11”. The white craft mat is made of silicone on the back, which keeps it from moving around your workspace. The white palette area boasts a 25 square grid that can be used as your color palette for your project or for mixing; your mediums will not dry on this surface. Durable feet on the bottom of the mat that raise the mat slightly; gives you a barrier along the edges so that your tools keep out of your workspace.