This 30 liter backpack is built to last with a highly water-resistant waxed cotton canvas and oiled leather exterior, and interior composed of PU tarpaulin. The TSA-friendly 15” laptop pocket features a smooth microsuede for your most precious gear, and the molded lightweight EVA back panel adds another level of protection while providing breathability against your back. The mesh bottle holder folds away easily with magnetic clasps when not in use, and the detachable sternum strap can be added to the shoulder straps whenever needed for extra comfort with heavy loads.