Our Alpha Fins will help you build true swimming-specific leg strength while improving your kicking technique, body position and ankle flexibility. Alpha Fins are the only swim fins to be manufactured with injection molded EVA foam. The ultra soft EVA foam make the Alpha Fins 70% lighter than traditional swim fins and provide unparalleled comfort. Due to the buoyancy of the material, these fins improve swimmers' body position while activating their kick. Fins are unisex, but all sizes are shown in Men's.