Nike Zoom Structure Triax 12 Running Shoes Men's Size 9 US 42.5 EUR Regular D width Was purchased new a few years ago for $144 New condition with no use $100 Firm ************************* Features: Designed for over pronators and low-arched runners. But neutral runners who tend to overpronate (especially womens!) or mild over pronators will find a shoe that gives the right amount of support while achieving an incredible comfort in a breathable, flexible and lightweight. The midsole post is completed and aided by the addition of a midfoot plastic shank, that Nike calls Footbridge. As we've seen in many other shoes, the Footbridge is a key component in the stability of a shoe as it "keeps your gait together", preventing you from hitting the ground with your heel and then transitioning to your toes at two very different (and dangerous) angles. The shank of the Structure Triax is asymmetrical and is not the most robust of the category - but it performs a fine job and it adapts to the shoe's philosophy of being supportive but flexible.