This bag is an evolution of previous designs. The very first design was a courier style, then onto a simpler version, (the initial design) for this design. There have been subtle changes to the design to aid the user.
The main addition has been internal strapping. This was added at the clients request. These straps are to help support smaller and more unusual shaped loads within the bag.
The materials for construction are the same as the previous designs. The main body made from a Jute canvas or a cotton canvas. The webbing for all the strapping made from 40mm cotton canvas.