Great product!  I looked at several other companies online and went to a few pet stores around town, but found exactly what I was looking for here--my cats loved it right away!! They were 4 months old when we got this "jungle gym" and were (literally) climbing on it as I was putting it together!! Pretty sturdy (you do have to re-tighten every once in a while, but that's minor)â€”my cats love the scratching posts and love to sleep on the (nice & cozy) platforms---just perfect for looking out the windows!  I have mine in a corner of my living room (that's about 15'X16'), and even though it's a good size, it doesn't seem to take up a large spaceâ€”the corner was unused and now has a cat gym!  Nice neutral color and excellent pricing.  Was very easy to put together (with one person)...took me less than one hour.  I (and my cats!) am very satisfied and definitely would recommend this product to others.