>>1848846internal frame
>lighter>everything over 40L is bloat anyway>better new materialsexternal frame
>back is wrecked when he gets old>no one needs to carry 90L>hitchhiking and flying more difficult>only used historically because no better solution was available, but today outdated>still mostly made in Chinapic related, is my made in germany internal frame backpack, only 5yo but over 8 months of travel, backpacking and hiking