Four patents set standards. More than two years of development culminate in a product of superlative: the new foot part is unmistakable. It consists of three different soft materials that perfectly complement each other with their properties: hard materials for optimal power transmission, soft and flexible materials for a perfect fit. The perforations on the top and bottom are eye-catching, which means that putting on and taking off is not hindered by pressure or suction. The wearing comfort is incomparable: you lose the feeling of having a fin on your foot