Black Polyurethane
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The Birkenstock A640 is a heavy duty polyurethane clog with a steel toe designed for work environments that require extra protection. It's great for kitchens, medical areas, etc. Removable and supportive footbeds will keep you comfortable all day.
Heat-resistant polyurethane uppers are really tough and washable up to 149 degrees. Soles are grease, oil, slip and heat resistant.
NOTE: this clog is heavier than either the Super Birki Clog or Profi Birki Clog.
