Birkenstock Professional SUPER-BIRKI Unisex Occupational Clogs in Black. These clogs are designed for comfort and durability in a professional setting. The upper material is Polyurethane, with a Microfibre lining and a Polyurethane sole. They feature a slip-on closure, a round toe shape, and a regular width. The clogs are waterproof and have a flat heel height. Safety features include a slip-resistant sole and an energy-absorbing heel, meeting EN ISO 20347:2012 safety standards. These are considered occupational/non-safety shoes.