This super slick hard shell backpack, called Solid Gray and made in the Netherlands, is cut and shaped from a single sheet of polypropene block copolymer. It's supposedly so strong that even if you bend it a million times it will never break or tear.
The material made to create the Solid Gray backpack was previously only used for industrial purposes but is now finally being used in a consumer product for the first time. The Solid Gray backpack has a special strap to hold a laptop in place (15.6" and under) and is water resistant. Get it here.