This is the Oceanic Viper 2 Full Foot Power Vented Scuba Diving Fins Features: Ideal for all diving and snorkeling skill levels Flexible Power Thrust Channel directs water off the tip of the blade for improved power and efficiency Free and Tech Free dive modes Power Vents reduce stress while accelerating water over the blade Oversized blade produces increased thrust and propulsion Generous yet streamlined foot pocket fits a wide range of boot styles while significantly reducing drag Extremely lightweight for increased performance and ease of travel The Viper Fins are ready to propel all of your aquatic adventures. Available in open heel and full foot designs, it&';s ideal for any skill level-but still packs a punch with the performance and aesthetics of an elite model.