High quality waterproof scratch-resistant Nylon (but not completely waterproof) & Leather Decoration & Smooth Metal Zipper. * Main compartment with double-zipper closure: the laptop lining can put an iPad or a 13" laptop; several small pockets can put cell phone, pens and other small stuff; put the water bottle and umbrella in the 2 small inner side pockets or 2 outer side pockets at your wishes; 1 front zipper pocket with flap can put an iPad mini; Generous enough to accommodate the magazine, 13" computer, tablet, glasses, wallet, keys, earphone, power bank, cell phone, document and clothes. * Backpack Size: 14.9