There is no port for a hydration hose on the ula ultra ohm, nor is there a separate bladder divider/holder on the inside. I have the Bearikade Weekender, and slide it vertically inside. Note the previous comment, there is absolutely no way the Weekender will fit horizontally inside an Ohm, it's just too narrow. I have strapped the Weekender horizontally outside, but I stopped because I found myself wondering all day if it would fall off (it did not, but still).?
