Birkenstock Professional SUPER-BIRKI Unisex Occupational Clogs in White. These clogs are designed for occupational use and feature a slip-on closure. The upper and sole are made of polyurethane, with a synthetic lining. They are waterproof and have a round toe shape with a regular shoe width. The clogs have a flat heel height (under 2.5cm) and a low top shaft. Key features include slip-resistant soles and an energy-absorbing heel, meeting EN ISO 20347:2012 safety standards. Item weight is 0.5 KG.