The main compartment now includes four extra full depth pockets. The single zip top opening has been retained but has also been reprofiled, so that it is now possible for the zip panels to lie behind the inside pockets, so forming the Billingham TukTop. In use the zip can remain open and protected with the main flap. The simple zip path ensures long, trouble-free life. The adjustable Delta shoulder sling comes complete with a leather and neoprene SP15 shoulder pad.An 8-15 Superflex and a Flap are included.External Dimensions – W470 x D220 x H315mm, W18,1/2 x D8,1/2 X H12,1/2insInternal Dimensions – W455 x D150 x H275mm, W18 X D6 X H10,3/4insThe 555 features, the newly introduced TukTop allows the main zip, with its double pullers, to be tucked out of the way when opened.No matter how heavily you load the front pocket, the Delta sling is designed to prevent the bag from tipping and to reduce any rolling motion as you move.The bags all feature our Five Loop Fixing system so that you can attach the Billingham Back Pack Harness or Tripod Straps.Designed specially to fit the Delta Sling of the 225, 335, 445 and 555 models, the Delta Pocket will provide extra storage space on your Billingham bag. The twin press-stud fastening is helped by the inclusion of a finger space so that it is not necessary to press against the contents of the bag.Constructed from Billingham Stormblock canvas with full grain vegatable tanned leather, solid brass fittings and a correctly angled Delta Sling and SP15 Shoulder Pad for comfort.<p.The two-way Grab handles allow the bag to be picked up with main flap open or closed and a quick release rain flap helps keep kit dry.A single, straight-path long-life zip with Billingham TukTop feature, full- height/depth front pocket and double bellowed front pockets with pen pockets finish the details.