This coat is more a trench coat than a traditional duster, but it works just fine, looks reasonably like leather, and wasn't coming apart or anything while it was being used.

I bought this for my daughter, who went as a detective for Halloween, and she liked it. She is going to use it later for a female Harry Dresden costume later on, so it works out fine. We bought the larger one, despite my daughter being quite petite, for its extra length and so it was from Amazon. =) The oversized coat worked fine and wasn't really all that wide through the shoulders so it fit her fine but gave her more overall volume, which suited her fine, as she didn't want anything real tight.

As a whole, I'd say I'm pretty happy with the purchase.