The Haglofs Ace is a bit of an allrounder and has been used at Unsponsored HQ for a number of years for both walking and mountain biking duties.
In this case it’s a 12l pack (medium). First it is hydration compatible (up to 3l) and this one have been used extensively for the last few years with an Osprey bladder. But there is also the possibility of carrying a couple of 1l water bottles in each of the two side pockets, one is located on each side of the pack. The hip belt can be tucked away inside of the pack (as seen above) which is a feature that Unsponsored Girl approves of as the she is not a big fan of belts on packs.