Answer:
In buckles or lace I help set the pace. The farther you go the thinner I grow.
I am the reaction after enjoying soda.
I go in hard come out soft. Blow me hard and I’ll make a pop.
I am lighter than the material I am made of. You see parts of me but more of me is hidden underneath.
What can you lose that will cause other people to lose theirs too?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.