>>1690371I use 2 of pic related, 2L in the frame, 1.5L below the frame and a 0.75L bidon. 4.25L in total. Especially useful when camping, I can afford to throw away 1L just to wash myself.
However for multiday rides in the desert I just strap one or more sixpacks of 1.5L bottles to my back-panier.
If you drive slowly on tarmac it's feasible to refill your bidon from one of the big bottles while riding.
Btw. I'm not someone to drink a lot, during my last trip through Norway I often barely finished my 0.75L water bottle during a 7-hour cycling day. (I'm not riding very fast)
