What are pool rings 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. Life rings, also known as a life buoy, life preserver, or throwable PFD (personal flotation device), play a crucial role in ensuring the safety of boaters and those enjoying the water nearby. Boat life rings are a must-have for any watercraft, and they can be a lifesaving throwable device in emergency situations.
What is a flotation ring?
The lifebuoy is usually a ring- or horseshoe-shaped personal flotation device with a connecting line allowing the casualty to be pulled to the rescuer in a boat. They are carried by ships and boats and located beside bodies of water and swimming pools.