This is a great shoe. It is very comfortable and is ready to go out of the box for a run.
I had read reviews about it being a heavy shoe and being a half a size smaller than other shoes. The shoe is very light and seems very durable so far. I actually spoke to a customer service rep at swim outlet and at Mizuno to ask about the half size difference. Both said that they had never hear about the half size issue. I ordered the shoe to fit and sure enough it was a half size too small. I had to pay shipping and handling costs to send it back and get a half size bigger. Once I got my fit I love the shoe.