Porter Tanker Rucksack features asymmetrical front pockets which are secured closed with a metal snap button and velcro. The main compartment has drawstring closure with a side zip for easy access when the bag is being worn. One internal pouch with zip closure and adjustable shoulder straps. 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.