The Cressi Reaction Pro are medium-length shoe fins (60–66 cm depending on size), built with an injected polypropylene structure that Cressi typically reserves for high-end freediving fins. Polypropylene transmits kicking energy almost instantaneously to the blade, without the energy losses that occur through soft elastomer transition zones. The “shoe-under-blade” design rigidly bonds the foot to the blade with no flexible junction, maximizing propulsive efficiency.
The Reaction Pro is the most powerful shoe fin in Cressi’s recreational diving range (excluding deep freediving fins), with excellent flutter kick performance and a good frog kick response for a fully geared diver. Cressi’s three-material injection construction (patented) combines structural rigidity over time with softer contact zones in the shoe to reduce hotspots. The manufacturer offers a lifetime guarantee on the blade for sporting use.
Its main limitation: these fins are designed for bare feet or very thin neoprene socks — they do not accommodate 5–7 mm booties, making them unsuitable for cold-water diving or dry suits. For those environments, an open-heel adjustable fin is the right choice. Note that MercadoLibre AR lists the earlier “Cressi Reaction” (without “Pro”), which has a simpler shoe design — they are different products. The Reaction Pro is mainly available through specialist Argentine distributors such as Scubaires or direct importers.
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