Answer:
Defends your noggin from the hard pavement
It is in every mountain, it's not in any hill, it's not in all the world, and yet it's in the mill.
I shave several times a day, yet I still have a beard. Who am I?
You can have it, and be at it, But it never lasts forever.
Which one of Santa's reindeer can be seen on Valentines day?
What is always coming but never arrives?