FCS II AIPA TWIN + 1 FIN SET - BLACK/BLUEFCS II AIPA TWIN + 1 FIN SET The FCS II Aipa Twin+1 Fin Set, designed by Hawaiian shaper Akila Aipa, redefines the classic theory of the twin fin design and transforms it into a more high performance mindset. *Fits well to the Firewire Flat Earth The Aipa twin's fiberglass material combined with a wide base and extra tall height gives this fin maximum drive, while the thinner tip offers release and spring off the top. This set performs great for