Mares Plana Avanti Quattro Fins Maximum efficiency and power. Avanti Quattro has set the standard for which all fins are measured. Plana Avanti Quattro is the world’s first fin with four channels. Its Channel Thrust Technology offers the most versatile choice in all diving conditions. Stabilizers improve stability eliminating ankle-twisting phenomena. Anatomic foot pocket transmits more power to the blade.

When water spills over the sides of the blade, it reduces thrust, and decreases efficiency. Mares design was derived from observing marine mammals such as manatees in their natural environment. When swimming they bend their tail to form a channel, which optimizes thrust. When proper channelling occurs, all of the displaced water contributes to thrust. The "Channel Thrust" technology maximizes the channeling of water and moves a much greater amount of water compared to other fins of the same size. The result is greater thrusting power with the same amount of effort.

 

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