Werks Traveler 6.0 2-Wheel Frequent Flyer Carry On (Black)Introducing the "Works Traveler 6. 0" collection designed to enjoy a comfortable trip. Although it is a soft case, it is a specification that firmly protects the inside. The two wheel type of "Frequent Flyer Carry on" is equipped with a Swiss designed handle system that is quiet and has excellent operability without the stress of steps with large diameter wheels. It's easy to handle and has innovative features, so you can't let go wherever you go.