The first swim fins were a lot like the one on the right – a shoe with a stiff board bolted on. Most still are. Other, more flexible fins still retain the old paddle shape, and most split fins are simply double paddles.
Then there is Force Fin – in a league of its own.
If you’ve ever tried to raise a board flat out of the water, you know how hard it is to lift. The other fins require the same effort to up-kick when you are swimming. After a while your foot gets tired and cramps set in.
The Force Fin folds in on the up-kick to reduce water resistance and snaps open for full power on the down-stroke. Swimming with the Force Fin at first gives the impression that nothing has been attached to your foot at all. That’s because the water flows backward, rather than up and down. You don’t have to work hard to make the flexible Force Fin work.
And since there are no thick ribs on the fin, the blade moves in any direction you want and doesn’t veer to the right or left at an awkward angle, as other fins do.
The other fins have a stiff foot pocket that causes your toes and arches to cramp. The Force Fin doesn’t cause cramping because the fin is flexible and the toes are free of the pocket, so they can bend naturally, without restriction.
The Force Fin is made of high quality polyurethane instead of rubber and weighs a mere 32 ounces. Strong, adjustable nylon straps hold your foot comfortably in the pocket.
So, by wearing the Force Fin you’ll be able to swim longer and enjoy it more.
Which is a bit like re-inventing swimming.