Werks traveler 4.0 is defined by it"s lightweight construction, spacious interior and advanced egronomics and has gained worldwide acclaim by being the most complete collection for today"s traveler, the patented curved monopole handle system reduces weight-in-hand, giving the benefit of an upright that weighs less and feels lighter, Werks traveler 4.0 is backed by the carry with confidence warranty which guarantees that the products be free of manufacturing defects in materials or workmanship for the life of the bag and covers functional damage caused by common carriers