Birkenstock Professional Tokio ESD Natural Leather Work ClogsThe Tokio ESD offers the ideal combination of classic looks and reliable protection from electrostatic discharge. The ESD version therefore protects man and materials in highly sensitive areas like in the semiconductor industry. All BIRKENSTOCK ESD models are tested in accordance with the requirements of EN 61340 and meet the ESD requirements of 1. 0 105 to 3. 5 107 ohms. Anatomically shaped cork latex footbed in an ESD version Upper: smooth leather