Those bags are made by Shaf International Inc. PU material, better than leather. I got them at my neighborhood leather store, Hudson Leather, they should be online. There is a DIY stay inside the bags that I built from 3/8" truck jack cranks. They're bolted on using the grab bar bolt and one stainless U bolt per side. I did this on two of my DOHC's. My rule of thumb is "the luggage has to be able to carry a gallon of milk". Yeah, I think a 12 pack would fit, they are big. With a rack you can have two bags and a trunk bag, that's what I have on my other comfy DOHC. Gotta have the stays with big bags or they interfere with wheels/chain and also fly upwards when empty.