Futures John John Techflex Tri-Fin Set • 2024The John John Techflex Tri Fin Set, available in Small, Medium, and Large sizes, are Neutral template thrusters built for power and control. With Techflex construction and flat foils, these fins offer stability at high speeds, ideal for everything from heavy waves to high performance conditions. Based on the design John John Florence rode to multiple World Titles. Fin Size Detail Size Side Fins Center Fin Ride Number Weight Small Height: 4. 42" Base: