Size wise, the Herschel Heritage (21.5L) is one of the smallest Herschel daypacks when compared to the Herschel Pop Quiz (22L) and the Herschel Settlement (23L)
Of course, we have to consider, back then our oceans looked entirely different, great shoals of fish would have boiled at the surface, you could have almost walked on their backs across the ocean
Ask a capitalist
It tipped the scales at 1,805 pounds
Ahlgren, M.O., (1998), Consumption and assimilation of salmon net pen fouling debris by the red sea cucumber Parastichopus califormicus: Implications for poly-culture, Journal of the World Aquaculture Society, Vol
The heavier and drag-inducing part will be the panniers with around ~700g for a single, high quality waterproof pannier like the Ortlieb Sport Roller Plus (or 1290g for the Downtown Two with bigger, padded laptop compartment)