The legendary Preisendorfer himself shaped the Futures Large Rusty Blackstix 3. 0 Surf Fin for driving speed in smaller waves. Blackstix construction uses a flexible carbon fiber tip to load and release energy for generating speed when you need it. There are four additional, asymmetrical carbon panels set at a 23 degree angle to hold through power turns and provide a snappy feel. Somewhere between a flat foil and a V foil, Futures' V2 Foil creates an effortless rail to rail linkup, letting you setup big moves while maintaining speed. A small layer of epoxy resin makes this fin strong and resilient.