The Fiskars Cutting Mat is the ideal size for easy transport, convenient storage or cutting fabric in a small workspace, perfect for when space is at a premium. Fiskars cutting mats include easy-to-read measuring grids as well as 30-, 45- and 60-degree bias lines for effortless creativity. Cutting mats are made of self-healing material and prevent work surface damage. Details: Gray 12" x 18" (30.48cm x 45.72cm) Self-healing mat provides a cutting surface that lasts longer than others Easy-to-read measuring grid on both sides means you can turn the mat over for double the usage 30-, 45- and 60-degree bias lines make creating triangle and star shapes easy