Solid Gray is the perfect backpack to keep your belongings safe from the elements or in the occasional tumble when hiking hazardous terrain. Because, as the name suggests, Solid Gray is first and foremost...superstrong! Its strength comes from its outer skin, made from a single sheet of polyprene, an industrial copolymer. This kind of waterproof shell also makes it extremely lightweight and waterproof in all conditions. Cleverly designed foam compartments inside the bag safely protect breakables like cameras, phones and so on. Dutch designers H. Lijmbach and J. de Leeuw have also given this bag super-elegant, clean lines, originally inspired by the armadillo shell, that make it look equally at home in town or country.