the sophisticated roamer split duffle x backpack from db in the sage kotsenburg edition. sage kotsenburg, first-ever olympic champion in slopestyle snowboarding, multiple x-games medallist and snowboard legend, relies on the roamer by db. the hytta is a fusion of a practical backpack and a duffle bag. the highlight of this bag is the split levels - designed to keep you organised while distributing the weight perfectly. mesh covers keep everything in place, allowing you to focus on your adventure.this backpack is made from durable recycled nylon and features a pfc-free upper.rib cage constructionâ„¢inspired by the human rib cage, which protects the body's most valuable organs, db's patented rib cage constructionâ„¢ protects your gear in the bag. the rib cage construction is built from strong, lightweight abs ribs formed as a triple-fold structure. this means that conventional padding can be dispensed with. this makes the bag lighter and yet protected all around.