Kånken was built to last. The Vinylon fabric Kånken original is made from and the G-1000 Heavy Duty of Kånken No. 2 are designed to stand up to wear and tear. But they're not unbreakable. So if you really love your Kånken (and we're sure that you do), you should really take good care of it. Here are some tips to help prolong the life of your favourite backpack.