new in the hugger line: the base with 15l volume . the hugger 15l from db is a small, smart backpack for short trips. its new, modern design fits perfectly into urban environments. but since db comes from snowboarding and loves the outdoors, this backpack is just as suitable for outdoor adventures as it is for long days in the city. 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.