Take your training to the next level using the innovative Nemesis fins. Technologies inspired by the mechanics of Humpback whale fins result in an advanced swim tool designed to give you more power in the pool. An ergonomic foot pocket provides ultimate comfort so you can focus on kicking with the help of blow valves that capture water for more resistance. Scalloped edges create a greater surface area for water to pass over for more efficient pushing, while flow channels allow the foot to rotate correctly to maximize kicking capability. The award-winning Nemesis will be the best workout partner you'll ever have.