This is a Great Shoe, no doubt.  I have been using this for the past 2 days and very satisfied with this shoe.  I have very flat feet, over pronation, my height 5' 8 and 165lbs and I always buy Asics, but this time I was looking for something different for a change and went in for Brooks Beast based on the recommendation of the salesperson at Dick's sporting goods; but I returned it the same day.  I personally researched and then choose  Mizuno Nirvana 7 and wanted to buy it ASAP; but was hard to find in any local stores and hence I ordered it at Amazon and patiently waited for a week to get it.  Great quality shoe, very comfortable and soft, so flexible in the front and the mesh keeps the legs cool and dry. Amazing shoe.  Best Shoe I have ever had.  (other shoes I use,  formal shoes - cole haan, sports shoe --Asics,  hiking shoe - cole haan)  overall, I like the Mizuno the BEST !!!!  Nirvana 7 is  an Awesome Shoe.  Bye to my Asics shoes.