Need a super tough, lean, and smart solution to transporting your everyday essentials? If you have precious valuables and want to make sure they are secured then Solid Gray has engineered the ideal backpack, made from polypropene block copolymer. It is an advanced, super strong plastic that can be folded a million times without breaking. This excellent product is the brainchild of Design Academy Eindhoven graduates Herman Lijmbach and Jasper de Leeuw, of the product design agency Lijmbach, Leeuw & Vormgeving. They included all the most useful features like clever compartments, a lightweight hardshell, padding and straps for your laptop, plus multiple interior clips to secure papers and documents.