The Mega Silicone Craft Mat - SQUARE (39 x 39")The Mega Mat is the granddaddy of our silicone craft mat collection. For those really big projects, or to cover your entire work surface, this is the craft mat for you. We now offer the Mega Mat in 2 sizes. The SQUARE Mega measures in at 39" x 39" and is just slightly larger than a standard US card table (typically 34" x 34"). This is a great option for those of you who are working on a surface that is, well, square! Works under your space as well,