1 Background Card Size: 420x297mm (16.54″ x 11.69″) Envelope Size: 425x302mm (16.73″ x 11.89″) 10 PET Stickers, including 9 sheets size: 210x297mm (8.27″ x 11.69″), 1 sheet size: 77x270mm (3.03″ x 10.63″) 1 Packaging Back Card, folded size: 420x297mm (16.54″ x 11.69″) 2 Auxiliary Sheets PET Stickers 10 sheets Auxiliary Sheet Size: 100x140mm (3.94″ x 5.51″) 2 Auxiliary Sheets PET Stickers 10 sheets