Materials:Waterproof Oxford Size:37*46*14cm (Length*Height*Thickness) (1cm=0.3937Inch) Capacity:Laptop， iPad， Change Clothes， Cell Phone， Daily Cosmetics， Water Bottles，Books Structure:Zipper Opening Design Large Capacity and Multi-Pockets Design Type:School Backpack / Children Backpack Sizes & Colors Explanation:1) There will be 1-3 cm normal minor deviation owing to manual measurement.2) The picture is of actual products. But minor color difference maybe exist due to different light and monitor setting