Pretty severe over-pronator. For almost 40 years, I only ran in the Asics GT type shoes but the latest version is poorly made, from substandard materials. So switched to Adrenaline, which purportedly works for over-pronators. Feels pretty good after two 10 mile runs, but it's early days. One thing - this shoe has more hot spots than Heinz has pickles. Order one-half size larger.