Haydenshapes Hypto Krypto TWIN PU - FCS II - 2 FinThe Hypto Krypto Twin is a performance keel fin design, with versatility and forgiveness allowing ease of transition from your other boards to this shape. It features a slightly tighter swallow tail and fins set further back to set the tail into the wave and bring control and smooth rail to rail transition. It feels and rides very similar to the Hypto Krypto with the wide point set forward, high volume up under the chest, and concaves that are smooth