Aqualung PHAZER - Adult Diving Fins for all levels with innovative Wave Rib Technology, Balanced, Powerful, Hydrodynamic Design, Ideal for Scuba Diving, SnorkellingWave Rib technology: The Phazer fin's side rails are designed with wave structures and elastomer rubber parts, providing balance and power with every stroke, whatever your level of diving experience Design: With its canopy channelling system, the Phazer optimises energy with every movement, improving efficiency, power and stability for all divers, whether beginners or experienced Improved hydrodynamics: Thanks to its flexible membrane and water