Ultra PRO's Foldable Dice Rolling Tray offers a safe and aesthetic space for rolling dice. These trays are no bigger than a sheet of paper (8.5 in. x 11 in.) when flat, and utilize small magnets in each corner to easily prop up walls to keep dice under control when rolling. With one side a grey poly material, and the other featuring a soft suede leatherette this is a great tray for any gamer.