A630 Polyurethane in Color Black | BIRKENSTOCK US。Birkenstock A 630 Alpro work clogs in black polyurethane offer exceptional durability and hygiene for professional environments. These slip-resistant clogs feature a replaceable anatomically shaped cork-latex footbed lined with suede for all-day comfort. The oil- and grease-resistant PU material is washable up to 80° Celsius, making them ideal for kitchens, medical settings, and industrial use. Certified in accordance with EN ISO 20347:2012 OB E (SRB category), they provide reliable traction and heel energy absorption. The solid black finish and closed-back design ensure a secure fit and professional appearance.