High-performance luxury ride, thanks to all the extras: low-profile Zoom Air units in the heel and forefoot, internal lacing system for customized fit, slow-recovery foams in the heel area that conform to the shape of the fit (along with excellent compression for long-term durability), medial air vents for breath ability, and heavy-duty full-grain leather upper. A one-piece shoe lining provides seamless comfort. The Phylonmidsole has strategically-paced wraps that lock the foot over the midsole platform, helping to keep your foot in place. Composite shank for added stability and support and molded EVA-based sock liner with urethane inserts.