Arena fins arena power fin black world-exclusive design trusted by swimmers of all abilities. An essential item for any kit bag, the arena power fins are used by swimmers of all abilities to increase their strength and speed in the water. The power fin features a world-exclusive aqua sole design for improved grip and superior propulsion. Made from 100% silicone to prevent blisters, the arena power fin has been designed to use the natural resistance of the water to increase muscular activity. Power fins strengthen your calves and ankles, while also helping your upper body adjust to swimming at an increased speed, making you a far better all-round swimmer. Train smarter. Swim faster. World-exclusive aqua sole 100% silicone blister-free fit superior propulsion all abilities strengthens calves and ankles 3 key features world-exclusive aqua sole the power fin’s aqua sole design is a world exclusive, featuring a channel specifically engineered for superior propulsion through the water. This sole also delivers better grip, giving you confidence and control with every kick. No other fin on the market combines this level of innovation in a single sole. Natural resistance training the diamond shape of the power fin is designed to harness the natural resistance of the water, increasing muscular activity throughout your kick cycle. This targeted resistance builds strength in your calves and ankles over time. Your upper body also adapts to the increased speed, making you a stronger al...