Birkenstock's QO500 combines everyday style with workday features. This lace-up sneaker is designed for on-the-job comfort and safety, from its fluid-resistant upper to its slip-, oil- and petrol-resistant outsole. Built on the trusted anatomic support of the Birkenstock footbed - a difference you'll feel after long hours on your feet. The shoe is certified in accordance with EN ISO 20347:2012 and meets the requirements of protection category O2. EU Size 40 / Women's 9-9.5 / Men's 7-7.5