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.
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