The Vivid Magnetic Foldable Dice Tray Blue by Ultra PRO provides a secure and aesthetically pleasing space for rolling dice. When flat, this tray is no larger than a sheet of paper (21.5 cm x 28 cm) and features small magnets in each corner that allow the sides to easily snap up, keeping your dice under control during rolls. You can conveniently store the dice tray in your backpack, character portfolio, or favorite board game box. Both the interior and exterior are crafted from the same vibrantly colored material.