I bought these because someone said in their review that it was real wood and I believed them since it doesn't specify in the specs.  So, yea--if you are looking for REAL wood, not particle board or pressed wood, these shelfs are not for you.  Returning.  Not to mention one of the shelfs came scratched, which is not so easily fixable on particle board.

Pros: Cheap, metal frames seem to be decent.
Cons: Cheap, Particle Board, scratch easily.