Backpacks like the taloon backpack and the mountain backpack look like specialist lightweight backpacks - these are very lightweight and foldable. It would be very easy to fold these up and store several in another backpack. This would be useful in Dayz as it'd be nice to be able to find a backpack for my friend, and give it to him - introducing more teamwork and encouraging caring for other survivors! Of course a folded backpack would not be able to store items, so they should only be folded when empty. Thoughts? :)
