EUROPEAN STANDARD FOR SAFETY SHOES

OB  

All basic requirements of EN ISO 20347:2012 are met. 

O1 

All basic requirements are met. The following additional requirements are also met: Closed heel area, antistatic, energy absorption capacity in the heel area.

O2  

All basic and additional requirements according to O1 are met. The following additional requirements are also met: Water penetration and water absorption 

O3   

All basic and additional requirements according to O2 are met; and is also equipped with a penetration-resistant midsole and an outsole with tread.