A couch and chair I want to buy at Pier 1 imports (labeled "Tampa
Seating") has a frame made of polyestyrene, not wood.  Is this a
normal usage with a furniture frame?  What are the drawbacks?  The
word polyestyrene brings to mind those bubbles or chunks of styrofoam
used in merchandise packing.  Is this a new reinforced product?  Pier
1 has no answer for us.  I'm concerned for durability, integrity and
not being taken in by a cheap substitute for wood, UNLESS this
material is perfectly acceptable and not challenged by a code or
inspection or rules of law.

I would be concered over its fire risk.