Answer:
What can you catch but not throw?
Do you know what you can hold without ever touching it?
By the way, what never moves, wears shoes, sandals and boots, but has no feet?
It is weightless, you can see it. If you put it in a barrel it will make it lighter?
What can be measured but not seen?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.