Vintage style tanned (Hunter) buffalo leather, thickness used is 1.2 to 1.3 mm. Leather backpack size: 11.5 x 15 x 6 (Inches), pocket sizes: 15 cm x 4 cm x 15 cm. Signature Distressed Hunter Leather. Hands-Free Style. Padded and adjustable shoulder straps. Drawstring Closure with Buckle Flap Closure. 3 External Pockets and 1 Interior Pocket. To give more vintage look it has brass fittings. This leather rucksack has a large main compartment, which is lined with thick canvas and a zipper pocket.