The Lunocet weighs about 2.5lbs out of the water, but in the water it's positively buoyant. Constructed from silicon wrapped in carbon fiber with a titanium footplate, the system gives you the same power on a downstroke as an upstroke. Coupled with a pair of strong legs the monofin could theoretically generate enough power to drive a human completely out of the water—yes, real life dolphin acrobatics at last. ..."
I would pay $50 to see what it feels like to swim as faster than Michael Phelps in one of those gizmos! So if if any of you win the lotto this weekend, HOOK ME UP!