Future Fins Techflex 2+1 Longboard fin set - Blue/GreenFuture Fins Techflex 2+1 Longboard fin set Blue Green The Techflex 2+1 was designed to combine the best of high performance longboarding and traditional noseriding.. This set is intended to be ridden as a thruster with the Techflex materials providing highspeed stability, while the center fin allows for maneuverability with a soft flex pattern through the tip. Carbon Honeycomb Side Fins H 4. 26 B 4. 33 A 13. 60 Centre Fin H 6. 88 B 2. 56 A 16. 13