Werks traveler 4.0 is defined by it's lightweight construction. spaciousinterior and advanced egronomics and has gained worldwide acclaim by being themost complete collection for today's traveler. the patented curved monopolehandle system reduces weight-in-hand. giving the benefit of an upright thatweighs less and feels lighter. Werks traveler 4.0 is backed by the carry withconfidence warranty which guarantees that the products be free ofmanufacturing defects in materials or workmanship for the life of the bag andcovers functional damage caused by common carriers