I'd also suggest this Francis Cade video1[1] where they tested various bike packing bags in a wind tunnel. Bar bags of any size or shape are really slow. A mu

I'd also suggest this Francis Cade video1[1] where they tested various bike packing bags in a wind tunnel. Bar bags of any size or shape are really slow. A much better solution is something like a Tailfin aeropack[2]. 1. https://www.youtube.com/watch?v=WcXh_oqs_Bs https://www.youtube.com/watch?v=WcXh_oqs_Bs 2. https://www.tailfin.cc/ https://www.tailfin.cc/