Oliver AT 45-652Z 150mm Zip Sided Boot Features Water resistant nubuck leather. COMFORTcushion Impact Absorption System with PORONTM protects the heel and ball of your foot. Comfort foot bed with perforated air channels to enhance natural air flow, now infused with OdorbanTM Control Technology. NATUREform wide profile hi-impact composite safety toe cap; fully non-metallic. Oliver SOFTstride open cell low density urethane foam built in to the insole for ultimate comfort and contour support. AT’s All Terrain dual density TPU/PU sole, heat resistant to 130° C surface contact. Electrical Hazard (EH) resistant sole. Superior slip resistant sole, rated SRB. Sole resistant to mineral and organic oils & acids; superior abrasion, split and crack resistant sole. Convenient quick release side zip. TECtuff toe bumper to protect against scuffing. Airport Friendly - Guaranteed not to set off airport metal detectors. AS 2210.3:2019 EN ISO 20345:2011, ASTM F2413-18