The DEWALT Backpack has been constructed to be heavy duty, made from rugged 1200 denier outer fabric & a 600 denier lining for maximum protection of valuable items. The large 40L capacity of the bag enables for storage of multiple power tools, hand tools & accessories. The bag has reinforced padded shoulder & sternum straps, enabling for added comfort during transport. The backpack features a rigid & waterproof plastic base which provides protection against dirt & moisture. There is also a separate padded internal compartment which is ideal for safely storing a laptop, tablet or documents safely.