I recently bought a deuter hydro 2.0(Litre) and also have a water bottle attached to my bike (normal size, 600ml or so)
I usually ride for about 2 - 3 hours, just wondering how much water you guys use when you ride. There was a deuter hydro 3.0(Litre) but it only came in one colour and i like orange! But i dont know whether i should have got the larger capacity.
So... what size?