I have been looking for a hamper to tote dirty clothing up and down stairs.  This serves that purpose nicely.  The material is a bit flimsy, but it was not expensive and I can always buy a replacement.  The first one I received was fire damaged, but the company sent a new one immediately, so I'm happy with the result.

Pros: Very convenient to fold up and stow away
Cons: A bit flimsy, so it may not last a long time