Went to the dark side on Saturday. Picked up a Chrome Yalta Night from the hub in Chicago. Yalta Night Rolltop Backpack | Yalta Night Bag | Chrome Industries Packed everything that was in my Metropolis, plus the Metropolis inside of it. All of it fit with plenty of room. My back was already warm from the riding I had done around the city before I got there. When I left, I threw the Yalta on and rode some more. When I got back to my sisters place, my back was noticeably not as sweaty. We will see how it goes over the summer when it gets a lot warmer.