The black comb is made out of really sturdy material.  I was worried when I ordered it that it would be the weight of a bottle brusher.    I was very surprised and happy to see that the whole condo is a quality made item.  My cat loves sitting on the top and she walks through the brush.  This is the first time I have had a brush/condo combination and I wasn't sure if she would like it.  

Pros: Sturdy, brush is quality made and will hold up to a lot of grooming.
Cons: None