The Ultra 14” is made in Premium construction and additionally have a hard carbon stringer glued to the deck for extra stiffnes and speed. This is hands-down the closest an inflatable can come to a composit hardboard. Because the carbon fibres are laid all in the same length-direction, you can still roll it up. This technology is licenced from Inflatable Composite™ (US Patent 8273427) and made in the USA.
Left – right: The carbon material on a roll. Swiss design how to apply. Glued to the deck. Finished board rolled like a normal SUP.