Didn't do any mapping today because of an assignment that needs doing, but I did go shopping and in among the bread and milk a Camelbak HAWG NV somehow got thrown in...
I bought it because 2 750mL bottles just doesn't cut it while mapping in the full Sun. With those bottles rides were limited to 1.5-2hrs and as such I'd regularly have to return home due to a lack of water rather than lack of stamina. Unfortunately amenity=drinking_water's are hard to find at times, mostly because they're not mapped yet and I'm exploring new territory.
Anyway, I went with a Camelbak because a) they're easier to acquire than Platypus packs and b) word is the current Omega HydroTanium bladders are taste free. I've not yet tried it so can't really comment on the taste free bit, but I can say that there is zero plastic smell from any of the bladder components, so there's hope.
Storage wise the pack is spec'ed at 18L. This is on the small side for backpacks but it's always a compromise between comfort, weight, size and, for a cyclist, aerodynamics. Anyway, there's more than enough room for tubes, tools, phone, GPS and a few sandwiches. Just don't go trying to fit a loaf of bread or bag of chips in it.
The storage space itself in separated into 6 sections, 7 if you count the bladder pocket. These include a large pocket which comprises the bulk of the storage, a smaller pocket in front of that (with several smaller subdivisions within it), 2 "large phone" sized pockets (1 either side), a lose netting section on the front and a water resistant top pocket which is designed for an MP3 player but again could easily hold a phone or GPS.
The back of the pack is an excellent airflow webbing which keeps body contact to a minimum to avoid sweat buildup. There's also a stiffened reinforcement membrane which helps to keep the pack away from your body.
Strap wise it's pretty well equipped. There's an elasticated chest strap and a removable waist strap. It even includes little strips of velcro to wind up the loose ends :). There are also 4 straps to squash the pack down.
Lastly, there's a sewn in rain cover tucked away underneath it.
The main downside of this pack is the price. It retails in Australia for $210 so it's not something for a casual user. The bladder comes with a lifetime warranty though and the stitching on the bag looks heavily over-engineered so it's not likely to crap out on you anytime soon. I'm not kidding about the stitching either: stress points have more thread in them than my 80L ex-army pack so they're very strong for a bag of this size.
I'll take it to uni tomorrow and post a follow up evaluation.
Anyway, have some obligatory pics:
Click to view full size!
Click to view full size!