Details: Clarks Unstructured Un.Olaf The Clarks Unstructured Un.Olaf men's lace-up dress shoe has a traditional oxford design and supple black leather upper. The innovative midsole features a molded OrthoLiteÂ® footbed for support, cushioning, and superior fit. The rubber outsole offers traction and flexibility. Wear the Clarks Unstructured Un.Olaf to the office with suits and separates, or with denim and khakis for a more casual look. MaterialsFull grain leather upperOrtholite footbedNylon shankLeather socklinerEVA midsoleRubber outsoleHeel Height1 1/1 "Platform1/2 "Weight12.5 ozLiningLeather and suedeCountry of OriginChinaItem #62162, 62163 Technical FeaturesThe Clarks Unstructured collection is lightweight, flexible, soft and breathable because it features the unique Air Circulation System â a climate control technology that keeps feet fresh and comfortable all day. Itâs like fresh air for feet. Strategically placed vents allow warm air to escape.Fresh air is pulled in through vents near the sole, creating a comfortable, dry climate with every step.Designed to offer impact responsive airflow, Active Air is a unique air-cushioning technology that buries a network of air channels and chambers deep within the midsole and footbed of the shoe.