Made of natural slate - formed 400 million years ago, a fine-grained rock derived from an original shale-type sedimentary rock comprised of clay or volcanic ash Since slate is a natural material, each piece will have its own characteristics of colour, marks, and lines Swissmar slate boards provide a unique and handsome presentation for a selection of cheeses, appetizers or bite-sized desserts Non-porous with a smooth surface and hand-crafted edges Board is 40 x 25 x 0.5 cm / 16 x 10 x 0.25 in Non-skid felt pads on the bottom of board to protect surfaces Includes 3 Slim-Line stainless steel knives to elegantly slice, serve and enjoy cheeses (1 Cheese knife; 1 Cheese cleaver; and 1 Cheese spreader)