What are those inflatable donuts called?
A swim ring (also known as a swimming ring, swim tube, rubber ring, water donut, floatie, inner tube, or, in the United States, a lifesaver) is a toroid-shaped (hence the name ring or doughnut) inflatable water toy. The swimming ring is made of PVC material, which has good UV resistance, fade resistance and tear resistance, and is equipped with a protective air lock, which can effectively prevent air leakage.
What are pool donuts called?
A swim ring (also known as a swimming ring, swim tube, rubber ring, water donut, floatie, inner tube, or, in the United States, a lifesaver) is a toroid-shaped (hence the name ring or doughnut) inflatable water toy. A lifebuoy, ring buoy, lifering, lifesaver, life donut, life preserver or lifebelt, also known as a kisby ring or perry buoy, is a life saving buoy designed to be thrown to a person in the water, to provide buoyancy and prevent drowning.