Porter Backpack is an iconic Porter product and a core piece of the Tanker line. It features 4 external comparments with zip, velcro or snap button closure. The main compartment has an internal laptop sleeve. Shouler straps are adjustable, heavily cushioned and feature metal D-rings. Lifting details from a classic MA-1 flight jacket, the tanker series features a three-layer construction of nylon and a poly/cotton fill and bright rescue orange interiors.