These should be marked - Warning, Use Only Under Competent Supervision. They are useful aids to help children develop their kicking and gain confidence in the water but they are not designed as life saving devices. They are not intended to be life saving devices nor are they intended to help young children to learn to swim. They should only be used under competent supervision. Swimming goggles have a separate lens for each eye, and are not designed for underwater diving.
Face masks have one large lens covering eyes and nose and are designed for underwater diving.
It is important that the correct size is purchased as a mask that is too small will be uncomfortable, and one that is too large may not seal and could allow water to enter. Flippers Flippers improve the power of the swimmer's kick. They are not swimming aids. It is important to purchase the correct size - flippers that are too small will be extremely uncomfortable and could cut off blood supply to the feet or cause severe cramping. Flippers that are too large will be sloppy, uncomfortable, difficult to use and could also cause cramping.