While at SAP TechEd ’07, I talked with Matthias Zeller about his Waterfield Cargo bag. I have an over-active interest in laptop bags, so I’m always on the look-out for The Perfect Bag. Matthias’ seemed nice and he details the different compartments, pockets, and little things like if it fits under an airplane seat well. In a pinch, Mattias says, he can fit a t-shirt and socks in there. But, as we get into at the end, he likes to carry a large suit-case with him for the rest of his junk when traveling.