Another evolution of the fins which conquered the world. A medium-sized Tecraclene blade with three channels for optimizing water flow: the center channel is inverted to better exploit the glide stroke of the fin. The upper and lower stabilizers help maximize muscle energy conversion. Tecraclene ribs in the foot pocket afford an improved fit and permit more efficient transmission of the kicking action. The range of sizes is extremely complete, from XS to XL size to better accommodate all requirements, including those of women and younger divers. The straps feature the ABS system for single-handed adjustment. A successful marriage of comfort and power.