20L Backpack from NSAT® Cuben® Fiber

Good comments first. Great construction, seams, materials. I was hoping for a carry on bag replacement. Unfortunately, I think it only technically approaches 20L if you factor in the fully packed top enclosure. Looks like an expensive day back that will live in the closet. The bottom is too narrow as well. I would totally pay for this design as carry on bag though. It is just too small