Got this bag for military use to supplement the A3 bags we are issued so I can have a simple bag with my personal gear.  Great canvas bag that feels sturdy enough to take a lot of abuse.  It's about 2/3 the size of an A3 bag and to me feels slightly more durable with thicker fabric so I am pleased with it.  A3 bags have a waterproof coating on the inside but this does not so I will spray it with some scotch guard just in case it is left sitting outside on a pallet.  FYI...  It has small D rings at the ends of the zipper that look like they are for a shoulder strap but no strap included.  I don't plan on using a shoulder strap as I like using the 2 handles as shoulder straps and wearing it like a backpack to haul it long distances if I have it loaded up with heavy gear.  The handles on this bag seem well suited to do that.