The HS1 Generation Series, designed by Hayden Cox of Haydenshapes, is a large size Speed Generating fin with a Ride Number of 8.4. The latest in speed generating fins, the Gen Series features a V2 foil for fluidity and a unique blend of uni-directional carbon and fiberglass for a more stable flex pattern. Similar feel to Blackstix, but a bit more subtle for those just transitioning onto foiled fins.