[...]I was mostly pleased with the choice of material used to cover the cat gym.  It is very easy to keep clean.  I was a little bit concerned with how light it was (approx. 43 lbs.)at first, due to my male cat weighing almost 20 pounds, but he absolutely loves it.  My smaller female cat loves the little cat cubby.  The only thing that they haven't used yet is the hammock.  I know they will love it once they get used to it.  Thanks for a great, super easy-to-assemble unit.  I couldn't be happier with it.  Shelise Hall