High quality waterproof scratch-resistant Nylon (but not completely waterproof) & Leather Decoration & Smooth Metal Zipper. Mainly made of Nylon Fabric, it's durable and breathable. Soft shoulder straps provided a good shoulder protection.

It can be use it as a handbag by the top handle when you don't want to carry it on the back. The padded and adjustable shoulder straps and back for extra comfort. The extended straps can be buckled so that the straps will not loosen. Dual padded, reinforced, adjustable shoulder straps provide optimum comfort and fit snugly around your shoulders.

45 x 33x  15 cm (L*H*W); 16.5 Liters. Weight: 1.75 lb

Main compartment with double-zipper closure: the laptop lining can put an iPad or a 13.6-17" 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, 13.6"-17" computer, tablet, glasses, wallet, keys, earphone, power bank, cell phone, document and clothes.