A640 Steel Toe Polyurethane in Color Black | BIRKENSTOCK US。Birkenstock A640 slip-resistant clogs in black offer a robust and protective footwear solution for demanding work environments. These German-made clogs feature a durable PU (polyurethane) construction that is water-resistant and easy to clean, paired with a heavy-duty lugged outsole for superior traction on various surfaces. The raised heel and closed-toe design provide comprehensive foot protection, while the anatomically shaped footbed ensures long-lasting comfort during extended shifts. Ideal for professional use in kitchens, healthcare, or industrial settings where safety and support are paramount.