Holds mint sheets up to size 245 x 315 mm (9 5/8 x 12 3/8), outside measurement 280 x 325 mm (11 x 12 3/4')., Blue binder made from sturdy card­board to hold 100 sheets. The crystal clear pockets are separated by glassine interleaving sheets. Slipcase 860K is not included and sold separately.