Zip Up Work Boots By Blundstone = 318 These lightweight lace-up – zip up work boots  style provides excellent ankle support while the heavy-duty zip provides for easy on easy off. It’s also packed with safety features like a steel cap for maximum impact protection and electrical hazard resistance. Tough toe guard extends the life of your boots. XRD® in the heel strike zone for supreme shock absorption. Polyurethane midsole for comfort. Thermo urethane outsole highly resistant to hydrolysis and microbial attack. TPU sole – heat resistant to 130°C High quality, anti-bacterial comfort lining PORON® XRD® in the heel strike zone for increased shock protection Full-length removable PU footbed – anti-bacterial, breathable & washable Excellent slip resistance in dry condition & good in wet conditions Excellent flexibility Excellent abrasion resistance Electrical Hazard certified to ASTM F2413-11 Complies with AS/NZS 2210.3 Spec Sheet –BLDNZ_318 Blundstone 318 Zip Up Work Boot – Wheat