The E112 kit includes three nylon straps that allow accessories to be attached to the lid of the E512. A monopod, jacket or other gear can be attached to the lid. A third strap with a quick-release buckle allows the lid to be easily opened or closed without removing your accessory. Top photo shows a monopod attached to the top of an E512. Center photo shows a jacket attached.
Bottom photo shows how the pouch opens, while the jacket remains attached.