Arena fins arena powerfin pro flex shimmered water short-blade training fins engineered for power, precision and longer sessions in the pool. Improve your training with this short and flexible arena powerfin pro flex, 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 length. The soft, long-life silicone gives maximum comfort and a reduced chance of blisters, and the fins are shaped individually for left and right feet. Built for competitive swimmers who mean business. Short blade 100% silicone open heel pvc-free left-right fit 3 key features maximum forward thrust the short blade is specifically designed to generate maximum forward thrust with every kick. Unlike longer training fins, the reduced blade length keeps your stroke tempo high and closely matched to natural swimming. This makes it ideal for competitive swimmers focused on race-specific leg conditioning. Precision control special notches on the bottom ribs promote faster, more efficient kicks by channelling water flow during the drive phase. Side grooves add lateral control so your kick stays aligned and powerful rather than splaying wide. Left and right fins are shaped individually, ensuring a precise, ...