Sorry John, no picture, but if you are talking about the Cleantech back pack, try their web site. It's really just a crop sprayer adapted for WFP work. It's just a 16 ltr. container with an integral pump & battery designed to strap on to your back. The idea is mobility & flexibility, & a lot easier to lift out of a vehicle that a 50 ltr. trolley. As I said above, it doesn't have to go onto your back.