These are adult sized. Not good for kids.

I only received ONE inflatable tube.

The tubes themselves seem okay, though you need an air compressor to fill them. I was using a bicycle pump and it seemed like it would take at least an hour. I didn't actually get to use them in the water because the inner ring is so small. I am and adult 5'4" 215 pounds. I was able to get just one arm through it and my head. The only adult that I can see fitting in the center to have the tube around you is a person who is below average weight. I was hoping it would be a skinnier tube with a bigger opening, but it's not.