E.T.
No! If it is deeper than a wading pool. Speaking as a former lifeguard, floaties and inner tubes are not safety items. They are fun items. They are not meant to keep children safe. An adult needs to be in the water with children who cannot swim and many pools require parents to be in the water with kids under 5. When I was about 3 I slipped through an innertube and got caught underneath it. My dad was right there and I was only underwater for a couple of seconds, but if he had not been right there I would not have been able to get my head out of the water on my own. I still almost 40 years later remember the terror I felt. While life guarding I saw many times when the same thing happened to kids. It takes just seconds for a child to drown.