Answer:
I am lighter than the material I am made of. You see parts of me but more of me is hidden underneath.
What can run but never walks licks but never talks has a bed but never sleeps has a mouth but never eats?
I run cold and hot, I look blue but am red. What am I?
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. I have greatest power when given away yet lust for me keeps me locked away.
Late afternoons I often bathe. I'll soak in water piping hot. My essence goes through. My see through clothes. Used up am I - I've gone to pot.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.