The 550 is Billingham"s original design for photo equipment. This cavernous bag easily holds vast amounts of gear. Medium or Large format, 35mm with a variety of accessory lenses, flash, film, batteries, meters, etc, all fit handily into the 550. As well as the two full height zippered pockets, the 550 also has two gusseted pockets with press stud fastenings. The large main compartment features SuperFlex partitioning. Additional protection is provided by a large rain flap which has buckle fastening, two thick top-grain leather straps and an embossed leather grip. Extra storage is provided by a zippered, external back pocket and comes complete with two detachable end pockets are included. Wide adjustable shoulder sling with SP20 shoulder pad makes it easy to carry and metal feet protect the base of the bag.