Arena fins arena powerfin pro flex midnight blue short-blade training fins built for competitive swimmers who demand precision and power. Improve your training with this short and flexible arena powerfin pro flex, which is 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. Equipped with special notches on the bottom ribs for faster kicks and side grooves for better control, with left and right fins shaped individually for a precise fit. The soft silicone material provides maximum comfort and a reduced chance of blisters, and the fin is completely pvc-free. Train harder, kick stronger, finish faster. Short blade open heel 100% silicone pvc-free left and right specific power training 3 key features maximum forward thrust the short blade is specifically engineered to generate maximum forward thrust with every kick cycle. Special notches on the bottom ribs allow for faster kick rates, while side grooves provide better directional control through the water. This combination makes the powerfin pro flex a precision tool for building genuine leg power. Unrestricted ankle flexibility the open heel design frees the ankle to move through its full natural range of motion, which is essential for developing proper kick technique. A toe opening adds to that freedom, allowing a broader range...