Finis Edge Swimming Fins Yellow EU 42 1/2-44

The Edge fins are the ultimate speed training fins, engineered to do it all. Through extensive testing at the FINIS Stroke Lab, the Edge fins were designed to optimize training without interrupting a natural kick cycle or compromising on comfort. The combination of 100% silicone and trademarked Smart Fin™ Technology reinforces a proper kick at high speeds, builds cardiovascular endurance and activates key muscle groups for a propulsive up-kick. Features:- Smart Fin™ Technology: Proprietary combination of blade angle and hydrodynamic vents for a natural kick cycle with instant forward propulsion- Technically Advanced Speed: Increased surface area and reinforced side rails for a proper kick at high speeds- Industry-Leading Comfort: Ergonomic contours maintain constant connection with the top of the foot to prevent skin irritation and tension- Targets Key Muscle Groups: Designed to catch water on the up-kick, activating hamstrings and glutes- Proprietary Blade Angle: Designed to feel like