Filson Tin Cloth Backpack Black, One Size Material: [exterior] oil-finished tin cloth (15-ounce), dry-finish tin cloth (11.5-ounce), [back panel] quilted fabric, [lining] matte nylon Shoulder Straps: bridle leather Access: top Pockets: 1 main compartment, 1 front bellows pocket Dimensions: 12 x 15 x 5.5 in