Unlock the Fury fin potential. Training fins create increased resistance in the water, helping you to improve strength and endurance. Dual-Rails down the side of the fin give propulsion on the up and down beat of the kick, leaving you free to ingrain correct technique. Speedo Biofuse technology – for maximum comfort and fit 100% Silicone for excellent comfort Strengthen leg muscles - added resistance increases the workload on your leg muscles which increases strength and endurance. Increase workout speed - Fitness Fins add extra propulsion to the stroke, which increases speed with minimum effort leaving you free to ingrain correct technique. ASIN B094JZC5T9 Color Fluro Tangerine/Pool Blue/Blue Flame Fit Type Regular Brand Name Speedo Sport Type Fitness Unit Count 1.0 Count Closure Type Pull-On Manufacturer Speedo Material Type Silicone Item Type Name Fitness Fin Included Components Fitness Fin Age Range Description Adult