I bought this on a whim, but turned around and bought two more as gifts upon seeing just how much my owns liked it. All three of them had taken a tour within minutes of unpacking and other than feeding time, it has been constantly inhabited. The wool/felt is dense and consistent, the structure is holding it's own so far (there is no frame or internal structure ) and the cats love it.
A little pricey, but this site has the best deals for a known quality product. Very pleased.