ScubaLab and its team of dedicated testers put six new tec-style, open-heel fins to the test. Here's how they stacked up against one another—plus, four more we have our eye on.
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It wasn't all that long ago that the only way you could gauge the breathing characteristics of a regulator was to simply breathe on it, and then try to make subjective judgments on its inhalation e
How to Read A Breathing Loop