USED in very good condition. Men’s size 8.5 Flyknit constructed upper delivers zoned stretch and support. Dual-density midsole and tri-star outsole provide flexible cushioning. Dynamic heel is stretchy for a snug, adaptive fit. Minimal, molded sockliner mimics the curvature of the foot to add support. Texture has been added under the toe and heel to enhance traction in these high-abrasion zones