The Blundstone 313 safety ankle lace-up boots are constructed from print leather with scratch guard toe leather protection and a PU midsole/TPU outsole. They are oil, acid and organic fat-resistant, heat-resistant to 140°C. PORON®XRD™ in the heel strike zone for increased shock protection. Full length removable polyurethane foot bed for underfoot comfort. 200 Joule impact-resistant steel toe cap. Certified to Standards AS/NZS 2210.3.2009 and ASTM F2413-11 including electrical shock-resistance (Clause 5.5).