My husband was so impressed with this Cat Condo. He assembled it in 10 minutes. He said it was built so every part went together smoothly. Our five cats immediately explored the various levels and resting places and continue to use it everyday. Even our large 19 lb. cat can comfortably curl up and sleep in the largest bed.  We love that it is large enough for all the fur babies to use at the same time! Excellent product!