Hi all, a year or so back I decided that my One Planet Tasman was a bit ridiculous for hiking and that a smaller, lighter and less complicated pack was required. I looked at all the usual suspects, Macpac, Black Wolf, Crapmandu etc, etc but I just couldn't go past the quality of another O/P, the Mungo in this case. I stopped into Backpacking Light in Melbourne and saw the Aarn packs and was pretty impressed by the concept, but not so much the execution. I felt that the construction of the packs was nowhere near that of O/P and there were straps EVERYWHERE. I suppose I was in hindsight a bit weirded out by the feeling of the FloMo shoulder straps too. However, I did keep thinking about those balance pockets...
So I decided to buy a couple of the Expedition balance pockets as the guys had an older style Aarn waistbelt buckle with the slots for the pocket prongs that would fit straight onto my Mungo. When I got home and fitted the two together I realised that with my 60L pack the 18L Expedition pockets were too much and the smaller Sport pockets would be more suitable.
I have found that the addition of the balance pockets have the following advantages:
1. The first is the noticeable change in centre of gravity, leading to a more relaxed and upright walking position. I find I spend more time looking at the scenery, glancing down to the track to see where I am going, rather than the other way around.
2. The convenience of having not only water and snacks immediately accessible, but having a spot for gloves and hat, sunscreen, camera, compass etc, etc etc.
3. Once at camp, the balance pockets can be detached and connected together with some basic shoulder straps (included when you buy them) to make a really useful daypack.
The pockets do not in any way impede my movement or vision and sit away from the body for airflow. I have noticed some questions on on other threads about suitability for women who are well endowed in the chest area, I can only say that the frame in the pockets is bendable to suit your shape as per a normal pack's integral frame.
Please see the following snaps taken on my girlfriend's mannequin. Please note that the pack is a long back length and mannequins do not actually have human proportions, that's why the pack looks a little ill-fitting.