BAOSHA BP-17 Quadrate PU Leather Laptop 15 inch Backpack School College Rucksack Daypack Black Bag Material: Top PU leather fabric, polyester lining Most expensive PU Leather, 99 Similar to Real Leather and No Feeling of Plastic Bag approx dimension: 16.5x 11.4 x 3.9 inch MULTIFUNCTIONAL: it can be used as School backpack,everyday casual bag,laptop backpack. SCIENTIFIC and REASONABLE STRUCTURE: Please refer to the pictures LIDETIME WARRANTY: We stand behind our products and offer a 100% Lifetime Money Back Satisfaction Guarantee.