You may have noticed your equipment works differently depending on the temperature. The way a board flexes and recoils in warm conditions is different than in the cold.
Your personal preference for what you consider as optimum flex is unique to where you live and what your local temperatures are. To take the guess work out of which of our boards is softer (generally better for colder conditions) or stiffer (generally better for warmer conditions) and to help you dial in flex we have created the Science Flex Factor. F1 being the stiffest composition we make and F10 being the softest.
If the board indicates a F+ then an ISS Stringer is in place (e.g. F3+) the flex rating becomes a +or- depending on the ISS Stringer being used.
- Science Flex Factor System is only relative to the Science Bodyboard Range and should not be compared to any other Brands.