You're headed off an an exciting trip or assignment. Everything is packed. Or is it? You suddenly realize you need a backpack but the plane leaves in two hours. Who you gonna call? This reasonably-priced accessory will pay for itself ten times over. Take any shoulder or waist bag and turn it into a backpack. Or pack it along on a trip in case your assignment changes and you need to pack things differently. Very handy. Very strong. Very Tenba.Accessory or replacement shoulder harness makes any bag a backpack.