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 pop up walls to keep dice under control when rolling. Store your dice rolling tray easily in your backpack, character folio, binder, or favorite board game box. (Dice not included)