I have the OMM 25l rucksack (and don't agree with comments on the other thread that it's too big, but that's just me). I also bought the 4l chest pouch, however unless I go up several bra sizes, there's no way it'll sit anywhere near chest level, it's more dangling around groin level when on shortest setting for the straps.
Anyone else had this prob or am I just odd? I'm not a shortarse either, so don't know where the problem lies - at this rate I'll have to cut the straps down.
Cheers