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.