The Zoomers Gold fins provide an improved foot pocket formulated from soft natural rubber for increased comfort. The short blade encourages shorter, faster kicks for additional propulsion through the water. The Zoomers Gold Fins are an ideal training fin. This fin can be used by all levels of swimming to boost cardiovascular conditioning and accelerate speed during workouts. Fins will train your legs for speed and endurance. The closed heel design creates a soft and secure fit and inhibits hyper-flexion. The fin blade aligns with the natural angle of the foot promoting a proper kick. Ankle flexibility increases the flexibility and range of motion for a more efficient kick. The Zoomers Gold Fins are appropriate for fitness and competitive swimmers. Female users use one size smaller. Fins are available in multiple sizes.