  If you're traveling light, you can board earlier on. in the last boarding group to surrender their bag for gate-checking  -  an awkward situation all around. Competition for bin space has also made travel more stressful. Passengers in the last.  Dwyer's company has been donating "oxo-degradable" bags to communities for three years. The bags, which should break down under light and oxygen in about two years, have not yet been accepted by the city of Boulder for distribution, but.  