Constructed from waterproof 14 ounce Desert Wax waxed canvas from Halley Stevensons of Scotland and top grain veg leather with a handprinted cotton drill lining. A roll top closure with an Austrialpin Cobra buckles, the worlds strongest, the bag uses natural cotton webbing. The rear and base panels are padded. Side mounted double D-ring tension locks on 40mm webbing. External double sleeve pocket and an internal laptop sleeve for a 13" or 15" laptop. Handmade in England. Worksmanship and materials are guaranteed for life.