99% RDM Reduced Diameter Mast 99% Carbon. Made in the USA. The 99% flatwater mast is designed from the highest grade carbon available, period. Don‘t mistake it for helium though, it‘s just carbon, nothing but carbon. Designed for Freestyle, Race, Freeride and Freecarve, this flatwater mast has the fastest reflex response of all Goya Windsurfing masts,...