This company has given the customers false information.  The Specifications under type of material state that it is Solid Wood.  However if you go all the way to the bottom which was not available when I bought it the type of wood states that it is Particle Board.  This information was not available when I purchased this and customer service told me it was solid wood.  Particle board is not the same as Solid Wood....I did my research on it and found that it contains formaldehyde which is harmful to cats.  The reason why I finally found out is because of one of the reviews.  I've looked for a couple of years to get a good quality cat tree only to find out I was given false information and something I would not have bought if I new the truth about this cat tree.