Speedo Biofuse Endurance Fitness Swim Fins - Grey/Blue

"These Fins Feature Speedo Biofuse® Technology For Comfort And Improves Lower Body Strength And Ankle Flexibility.
Speedo Biofuse® Is Engineered To Perform With Your Body, Offering Superior Comfort Through Fit.
The Human Body Combines The Structural Strength Of The Skeleton And The Flexibility Of Muscles. The Result Is Performance Greater That Its Individual Parts. This Is The Inspiration Behind Speedo Biofuse® Technology, Where Products Are Engineered To Perform In Harmony With The Body. The Interaction Of Structure And Flexibility Result In Enhanced Performance, Comfort And Fit.
Structured In The Fin Blade Yet Soft And Comfortable In The Foot Pocket For Enhanced Performance And Fit.