The outer shell is made of complex, multiple seams of highly tear-resistant Cordura fabric, is padded and reinforced so that even during the substantial shocks the instrument stays intact. The rugged zippers tolerate the high stresses of everyday use very well. These bags are distinguished by the ample equipment details. From the size of 72-bass accordion bags this one has a large music sheet compartment (A4) including pen pockets and note paper compartment, as well as a music stand compartment. There are also adjustable, cushioned and ergonomic shoulder straps.