The Arc\'teryx Covert CO overcome all the limitations of wheelie bags and duffel bags. This is a clean, sophisticated, functional travel bag that is arguably the simplest, most understated, discreet and sophisticated bags ever tested. The Covert is a rectangular cube, vaguely army duffel like, that stands on end, slides easily into the overhead, and is made from materials you could back a truck over—or even hand over to baggage handlers without fear. The bags are superbly durable, treated to repel dirt and water, and can be carried in numerous ways: with hidden backpack straps, or by side and top handles.