ECCO Chukka Boot Black Cow Leather EU 45 US 11-11.5 Easily transition from the office to dinner with the ECCO® Unique rubber outsole made using state-of-the-art ECCO TRAY™ Technology for added stability and grip. Premium leather upper. Lightweight sole provides cushioning and flexibility, using innovative ECCO FLUIDFORM™ Direct Comfort Technology. Perfect addition to your office style or laid-back look, combining the best of semi-formal and smart-casual in a very clean design. derby black tie event wedding work college school outdoor boho travel vacation prep preppy Date fall winter snow comfort