Comments about Lowepro Lowepro Pro Trekker 600 AW Hydration-Ready, Expedition Camera Backpack - Mica/Black:

I have been using this backpack for tha last 4 months and it works just gr8! The amount of gear I can pack into this beast is phenomenal and the expedition class harness lets me wear it comfortably for hours. I went on a 5 day hiking trip to Tasmania recently and I used this backpack to carry all my camera equipment. Also, my normal daypack was attached to it as was the tent in which we used to spend the night. This bag can accomodate everything.
The only thing that I found a bit stressfull is the access to the gear, but it comes at a price as protection is top class. We were hiking in the mountain rain sometimes and I didnt even have to put on the extra weather protection on the pack. The hydration pouch is also welcome, although, at this price, I would have expected to have the hydration pack to be included with the bag.
This bag is definitely not a Carry On luggage (atleast for domestic airlines) although it said so in the brochure and I learnt it the hard way. But the amount of foaming is about ok for Check In purposes, more would be nice.
But when it comes to hiking, I doubt if there is anything better available in the market today.
Best feature: The adjustable harness really works and the level of comfort is amazing for a backpack of this size.