Fins allow the player to swim faster through the water. A wide variety of fins are used in the sport, but large plastic/rubber composite fins or smaller, stiffer fibreglass or carbon fibre fins are commonplace at competitions. As with any of the equipment, the published rules mandate fins without sharp edges or corners. All sharp edges must be covered up by a protective film or tape to prevent injury. Players are also normally required to use closed heel fins as a further injury prevention measure.
You can buy fins to start with at your local dive shop. But as you evolve as a underwaterhockey player, you want more powerfull fins.
You can order these at