The 660 is a mid to high mileage road running shoe. With distinctive overlays and medial post, it provides a structure, a supportive ride within a versatile cushioned shoe. It has a classic look with key design elements from NBx collection. Stability Web-optimal arch support that's both rigis and lightweight, while preventing midfoot flex. Medial Post. Abzorb-Top of the line foam. A superior blend of cushioning and compression set features with Dupont engage and isoprene rubber for the ultimate ride. N Durance- Rubber compound for maximum durability used in high wear areas.
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