These were two different custom orders. The backs are angled to match the angle of Nitto front racks, so that the tongue of the rack can help support the bag without the need for an additional decaleur. The blue one was enormous! The green one is celery and navy, and you can see it on its matching Rivendell here.

They both have cuesheet windows on the top; for reference, the viewable area is about the same between the two of them, believe it or not.

Jake was looking at a backpack kinda like this in EMS, so I made him one for his birthday. I borrowed it at one point and decided I liked it, so I made me one too. They are expandable via side zippers, plus two different compression straps on each side. also have laptop slots against the back accessible by a zipper on the side that doesn’t really show in the photos. I’ve found mine to be very comfortable to carry, even with a large load.

This one was from awhile ago. It has a sleeve for the “tongue” on the end of the rack, angled to match, with additional lash points on the lid and a strap to go around the saddle rails in case additional stability is required when it’s full. I particularly like the black and tan together.