Features: Smooth zipper open and close, durable hardware, prevent getting stuck. Oxford cloth material, wear-resistant, waterproof. Pack inner designed have phone pocket, concealed zipper pocket, anti-theft. Sewing thread making craft, smooth stitching, the lines are not easy to break off. Multilayer storage, separate dry and wet separation compartments, large capacity. Thicken shoulder strap, soft comfortable sponge, ease shoulder pressure. Cortical reinforcement, effectively reduce attrition caused by friction. The bottom have 4 support nails, does not contact with ground, dustproof, anti-scratch.