Arena Powerfin Pro II fins are designed for advanced swimmers. With a shorter and wider press, they are ideal for fast, high-frequency kicking. They train your kicking power and allow a greater range of motion in the ankle due to the loose heel. The fins have side rails on both sides to help control the kick. A stronger kick and faster recoil is also achieved by shaping the fin to the toe. The fins are made from 100% silicone for maximum comfort. The fins are different for the right and left foot. These fins are now part of every competitive swimmer's kit. Within a year they have become so popular that they are basically a "must have" piece of equipment for all swimmers. Personally, I've had these fins for a few years now and can't get enough of them. They are probably the best fins I have ever owned. The main difference to other fins is the open heel which allows for more ankle movement. These fins are also a bit stiffer than normal fins and will be harder to get into the first time, but that's just a mat...
