The Competitor Monofin is made up of a durable rubber foot pocket and a hand-tapered, fiberglass blade. The tapered blade provides maximum speeds in the water, up to 3.3 meters/second, and creates a whip-like action at the end of each kick. The tension in the large fiberglass blade creates a compounded resistance for maximum propulsion. Ideal for free divers, fin swimmers and water sports enthusiasts.