Australian Oilskin Backpack -The Didgeridoona- Non Insulated. This classically styled backpack is made from Australian oilskin, so not only does it look nice, it is also is extremely durable and weather proof. From bush walking to working in the office or classroom, this bag has got you covered with its spacious main compartment and outside pockets. The inside has a sealed pocket, which is perfect for little things you don’t want to lose, like earphones or USBs. The bag has multiple metal and leather fittings holding it all closed and in shape, and has sturdy adjustable straps so you can get the right fit.