CONFORMS TO EN ISO 20347:2012 OB WRU E SRC UPPER Leather. Durable, sturdy and water resistant Padded Collar and Tongue. Extra comfort Polyester Lining TECH Trip Guard Easy to move across varying floor surfaces. Defined Heel Providing additional safety on stairs and ladders SOLE SFC Slip Resistant Outsole. 5 Star HSE GRIP rated, greatly exceeds industry standards Clog Resistant. Dispels debris Added depth. Additional durability and wear SRC SRA Heel 0.50, SRA Flat 0.52, SRB Heel 0.42, SRB Flat 0.50