An ultralight, internal frame, mountaineering backpack. It has a volume of approximately 60 liters, not including hip and shoulder pockets, and weighs 747 grams.
I followed the tutorial at https://www.stitchbackgear.com/articles/easy-to-make-ultralight-backpack. Then I added some additions that I thought would be handy, to include waist belt, hip pockets, custom shoulder straps, and an internal frame of a 4 foot long, 1/4" aluminum rod cut in half and sealed in 1" webbing folded back on itself.
