Birkenstock Professional SUPER-BIRKI Unisex Occupational Clogs in White. These clogs feature a polyurethane upper, synthetic lining, and polyurethane sole. They are a slip-on design with a round toe shape and a flat heel. The clogs are waterproof and designed with a slip-resistant sole and energy-absorbing heel, meeting EN ISO 20347:2012 safety standards. Suitable for occupational use, these are non-safety shoes and are a low-top, sandal-style clog. The shoe width is regular, and the item weight is 0.5 KG.