The check book cover features Burlington Northern/Santa Fe diesel number 5985, a SDF45, at Palmer Lake, CO in January 2007. The check book cover is 6.65" x 3.5". The inside side 1 contains 4 slots to hold id or credit cards and 2 compartments the width of the cover to hold papers or paper money; side 2 contains a compartment the width of the cover to hold your check book paper backing with a plastic cover and a slot about 2.75 inches wide across the side.