I've got this...
http://www.servicesandsecurity.com/produ...litre.html
Fortunately not for that price (feck.... how much? :O )...
It's survived 6months of being dragged around europe and thoroughly mistreated as seat, pillow and prop. Not to mention subsequent camping excursions.
I recommend it for its durability and capacity but it's far too bulky (and i ain't that big lol) for the long-haul in my opinion.
These days I use this
http://www.tesco.com/direct/wenger-backp...__506-6072
But only because work were giving away 70% off coupons for staff at first, but it's grown on me. It's very lightweight and it's compartmentalised internals make life a lot easier for the potential scavenger.
Get rid of the badge and tape off the shiny metal bit and you're set
"Wicked phenomenon, yes? But, you know, it’s not any more "evil" than, say… fire. It all depends on your point of view. Try to get a better understanding of things before you make your judgement."