The Regulator Double/Quad Convertible is the perfectly versatile bag. With a durable 600D polyester shell, thick closed-cell foam padding on top and bottom, and an internal fin organizer, we've crafted it to fully protect your boards and essential items—from the roof rack of your buddy's travel van to the cargo hold of an international flight. But the real ingenuity is in its modular design. The Double/Quad is built in two cells, fully connected by moulded YKK® #10 heavy duty zippers. Zip it apart and take just one, for a single session or weekend trip where 2 boards will do, or zip it together for longer trips requiring up to 4 boards. This feature also gets you through bag check for the many airlines that strictly limit you to 2 boards per bag. Unzip it, and check 2 bags with 2 boards, then when you pick it up at baggage claim, zip it back together for a singular 4-board-carry bag.