Weight

Finning is a start stop motion, like lifting weights. There is less strain with less weight. Tac fin weighs only 1.9 pounds compared to other High-Performance Fins that weigh as much as 5! We do this through a proprietary compound that is stiff, and because it is stiff, we need less material, which makes it very thin. We also use a curved fin design to add rigidity. No giant masses of rubber ribs on each fin, the sleek, thin design at less than half the weight of other High-Performance Fins means you get less tired, which translates into more bottom time.

Agility

Thanks to TAC’s proprietary material, thin design, and curved blade, we have a very rigid cross-section. This means when you turn in the water, the sides of the fin cut through the water instead of having to move a large mass and “sailing” (bending the fin sideways.) This makes tac the most agile fin on the market! In military testing, TAC Red Label beat every fin tested hands down in agility underwater.

Thrust

Tac’s shorter design provides more rotational control. This, in turn, supports a stronger kick and allows a slightly wider blade for a larger bite. Stiffeners on top of the fin blade engage on the power stroke to add thrust to the stoke that provides 90% of total thrust. They release on the recovery stroke to conserve energy. Carbon stiffeners can be added to tune the fin to your body and kick style.

Efficiency

The shorter design reduces the leverage working against the diver. Additionally, the open toe means we can reduce it further and use the section under the toes as a working fin surface. Plus, the load is transferred to larger quadriceps instead of weak hip flexor muscles. Power in vs. power out. That is ultimately what defines a great high-performance fin.