The ProLite Travel surfboard bag has 10mm thick padding and can carry 2 boards with the fins removed and the built-in divider in place. This awesome expandable travel bag offers incredible value and is rammed with neat features to keep your board/boards in pristine condition when travelling. The whole bag expands to carry 2 boards and can be fixed to stop a single board from moving around. Alternatively, if you're only taking 1 board you could double up with your 5mm day bag for the 'belt and braces' approach. The zip is set back from the tail of the board to improve protection further. You get a deployable padded shoulder strap and an ergonomically formed carry handle, a fixed fin/valuables pouch and a massive Velcro fastening pocket big enough for a wetsuit and accessories.
This product is available at the following surf shop.