FlexBar

Early flexbars 

FlexBar technology invented by Barron Surfboards  and incorporated into   Channel Islands and Barron  Surfboards. Flex, rebound, and resonance all play a role in how your board works. Harnessing and controlling these will take board performance to the next level.  The FlexBar optimizes the energy and spring derived from both longitudinal and torsional tail flex in your surfboard by refining and focusing these forces under the back foot.

As surfing evolves so does technology  Flexbar is no different refining the tec to be lighter ,stronger and faster .