Awesome product!
This is a fantastic product.  I wish we lived somewhere with humidity so I could see what my curls look like in a place they could normally frizz.  My Conair dryer didn't come with one and I have curls for days.  Also, The Curly Co's customer service is fantastic.  As a suggestion to make it easier to fit it on the hair dryer, heat the end of the diffuser with the hair dryer to make it more flexible and then put it on.  Also, leaving it collapsed makes it easier.
Rating: 5 stars