You know that sensation when a beautiful block of Wisconsin’s finest is about to get shredded through the grater? 
Just imagine the mesmerizing, fluid slices created by a simple motion. But what if that same contraption was used on the water? Prepare to be amazed. Our brilliant team of scientists in their tiny lab coats have designed a fin with side perforations, allowing small particles of water to pierce through. The result? A set of fins that can ride loose with one setting, but become incredibly locked in when reversed. With just one set of 3.5" fins, you can experience the ride of both 2.5" and 4.5" fins, depending on the direction the holes are pushing the water. Get ready for a magical ride.