The Dahon ‘El Bolso ’ carry bag a simple bag that comes in it's own sack top allow it to be carried like a back pack when you are on the bike. The bag is very easy to use, open it up, put the bike in the middle, zip up the sides and then sling it over you shoulder. The whole operation takes hardly any time at all and is extremely convenient if you plan to travel with your bicycle, making it easier to carry and cleaner to transport.