Reaction pro is an adventuresome fin derived from cressi deep freediving models, which also introduces the use of more responsive materials to the sector of normal-length full-foot fins. The blade is not in fact made using a copolymer, but instead it is polypropylene, which is exceptionally lightweight and responsive. This material is paired with a comfortable thermo-rubber that is used in the footpocket, the side stringers, and the various inserts. The blade starts from the upper side of the footpocket, increasing the useable surface by 20% over traditional fins of similar length. The optimized, highly anatomical footpocket is designed by computer, ensuring that leg-to-fin power is conveyed perfectly
