The Mares Avanti Quattro+ are open-heel adjustable fins considered classics of sport diving. Their name comes from four longitudinal channels in the “Tecralene” technopolymer blade that direct water backward during the stroke, reducing lateral spillage and improving propulsive efficiency (Channel Thrust technology). The blade flexes and springs back elastically during each kick, delivering smooth, consistent thrust.
The thermoplastic rubber foot pocket is wide enough to fit neoprene booties from 3 to 7 mm, making them versatile for both tropical and cold-water Patagonian diving. The stabilizing side rails on the blade reduce roll during the flutter kick — useful for underwater photography or moderate currents. Blade length ranges from 37 to 39 cm depending on size, placing them in the medium-length category: more manageable than long thrust fins for beginners, but with enough power for a fully geared diver.
Recurring forum feedback notes moderate positive buoyancy: in low-density Andean lake water, divers may need a bit of extra weight at the feet or thicker booties. They are also slightly wider than alternatives like the Cressi Reaction Pro, which generates some lateral drag during technical frog kick. They are the recommended choice for intermediate divers seeking a robust, versatile fin. In Argentina they are available through Mares distributors and occasionally on MercadoLibre AR.
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