We have laboratory tested this cooler according to the EN 12546-2 standard

Dive in with Speedo’s ECO Endurance+ Swimming Jammers

fr/p/kit-entretien-chaussure-essential/_/R-p-339843

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Diving fins FF 500 soft black blue Size:UK 3-4 EU36-37 We have laboratory tested thisUnderwatersports enthusiasts looking for a comfortable and supple fin for snorkelling, diving, freediving, and spearfishing. Performance and power At Subea, we developed a "fin robot". This robot is a test bench that measures what the fin renders in terms of propulsion, thus what it requires in terms of energy from the diver. We can therefore deduce the efficiency of a fin. We use this robot throughout our product development to correlate our feedback