Pros: Very gentle and cats enjoy it
Cons: Doesn't work that well on cats with thicker hair
I used this brush on my senior cat Wesley who had developed very sensitive skin and a low tolerance for brushing in his old age. It was the only brush he allowed and it did help get the loose hair up although it didn't gather as much hair as grooming tools with teeth. It also works well on cats with fine, fly-away hair.
This brush is so gentle that every cat I've ever had has put up with it being used on their faces and chests. They also enjoy being brushed with it - I've rarely had a cat cut short a grooming session with this brush. The only downside to it is that it just isn't that effective.