The technological edge is achieved with the patented Nature's Wing technology by splitting the blade to generate highly efficient thrust or lift like an airplane wing, while reducing the strain on the muscles of the leg and hips by allowing the water to drain between the dual blades. With the V12, Oceanic's design team has worked long and hard to create just the right combination of fin size, shape, and angle. Then added Duoprene - a proprietary combination of natural rubbers and hi-tech polymers to fully maximize this new technology and create the ultimate fin.