Twin fin retro was created from the old models of traditional fish that are originally wider and less rocker, that is, boards with little outline curve, thinking of a board that could be used in any condition and with a wave size of up to 5' , I made some modifications, three of them being the main ones: ROCKER, WIDTH AND FLOAT DISTRIBUTION. Adding a little curve to the line of the board made it possible to make faster drops without burying the edge, in width I brought it to the narrower model increasing speed and agility in the curves and in the distribution I made all the fluctuation to be concentrated from the 24" of the tail to the beak without leaving the retro design.