The revolutionary side ribs are the heart of the Phazer. The elastomeric rubber sections of the ribs work together with the wave-shaped structures, accumulating (loading) the energy of every kick that is released during the kick cycle. The effect is a solid, powerful yet easy kick, suitable for beginners as well as for expert divers. Equipped with new bungee strap and heel-pad for quick and easy donning and doffing. Tri-material construction optimizes every single area of the fin: foot-pocket, blade and side ribs are made with different specific advanced materials to get the best performance. Thanks to the engineered channel in front of the foot pocket, the water can flow through the blade, enhancing efficiency, power and stability, making the Phazer a powerful and ideal fin both for professional scuba divers and students. The blade features a soft TPR membrane to better canalize water during the primary and recovery portions of the kick cycle.