The Pro-Lite 1-2-3 Convertible Surfboard travel bag was designed to fit up to 3 boards for airline travel. Once you get to your destination you have the option to convert the bag from a triple to a double or a single. The center of the bag completely unzips allowing you to have two heavy-duty day bags, while the space between the two separate bags acts as a compartment for a third board when they are zipped together.