On your next trip, don't force yourself to choose between airport convenience and the day to day ease of carrying around a daypack. With the EC Lync System 20 from Eagle Creek you get the best of both worlds. When it's fully assembled, you get all the ease and convenience of a fully functional wheeled suitcase, complete with multiple organization pockets, durable wheels, and a retractable handle. However, strip down the frame and all of a sudden you've got a functional daypack that you can use to hit the city, while you leave the bulk and weight of the suitcase frame in your hostel. Lockable external zippers ensure your things stay safe, and this system conveniently fits most airline carry on requirements.