Very sturdy.
 Believe me, If I can put this together and put it up to be very sturdy..( I'm a 61 year old woman with a torn ligament in both arms)..Anyone can do it. Just don't use the puffy balls that come with it..they're for display ONLY...put up your own cat toys! The hanging rope is fine to use.

The man at Wayfair was a joy to work with...I recommend this product and Wayfair!