This A3 Glass Cutting Mat from Do Crafts is made from tempered glass for strength, has a precise measurement grid, non-slip feet, smooth polished corners, can be cleaned with soapy water, is 5mm deep and is marked with useful paper sizes. This cutting mat is essential for crafting with shape cutters, craft knives and rotary cutters, each sold separately. Each package includes one glass cutting mat that measures approximately 13.25" x 17.5".