The “ScubaPro Jet Sport Fins, Scuba Pro Diving Fin” is a longer version of the traditional Jet Fin. “Jet Fins” are a child of the old-school 1960’s style of innovation; the kind that eventually took us to the moon and back. The idea behind them is not too hard to wrap your head around.
The fins have 3 channels that run along the underside of the fin (the part which would touch the ground if you were standing on land), and a group of vent holes below (and connected to) the channels.
What this does is allow water to flow through the fin as you go through your stroke. It minimizes the drag during your upstroke, and maximizes your propulsive force during the downstroke; a truly ingenious way of streamlining the way we use our feet to propel ourselves through the water.
“Jet Fin” is actually a very accurate description of the concept, because it truly does utilize the same principle as a jet engine; which is to reduce the resistance to flow on intake, and maximize fluid flow as the fluid leaves the system.
Hopefully, I didn’t lose half of the audience with that history/physics lesson. Let’s move on to what makes these fins better than most other Jet Fins on the market.
Firstly; the increased length of the fins makes a noticeable difference. In an ideal world, longer fins are always better (when it comes to propulsion, not ease of use). These Jet Fins split the middle between long (non-jet) dive fins and your traditional 14” Jet Fin model.
And the result is just that: A middle of the road fin that offers satisfactory speed, but isn’t as heavy as a full 24-28” dive fin. If you’re looking for a great addition to your current selection of dive gear, the “ScubaPro Jet Sport Fins, Scuba Pro Diving Fin” is hard to beat.