Arena fins arena powerfin pro flex shimmered pink short-blade silicone fins built for power training and leg technique improvement. Improve your training with these short and flexible arena powerfin pro flex fins, perfect for competitive swimmers and longer training sessions. Designed for power training and leg kick improvement, the short blade delivers maximum forward thrust while the open heel ensures maximum ankle flexibility, optimal stability and comfort. Special notches on the bottom ribs promote faster kicks, and side grooves provide better control throughout every set. Soft, long-life silicone offers maximum comfort and a reduced chance of blisters, and the fins are fully pvc-free. Built for competitive swimmers. Engineered for every training session. Short blade open heel 100% silicone pvc-free left-right fit power training 3 key features short blade, maximum thrust the short blade design is engineered specifically to generate maximum forward thrust with every kick. Side grooves along the blade give swimmers better control and directional stability. Bottom rib notches are shaped to encourage faster, more efficient kick cycles. Open heel for true ankle flexibility the open heel construction frees the ankle to move through its full natural range, which is essential for developing a strong, technically correct kick. A toe opening further broadens the range of motion so the foot can work naturally rather than being locked in place. The result is optimal stability and...