Made to provide comfort in uncomfortable conditions, the Carhartt 8-Inch Dark Brown Waterproof Insulated Work Boot With Medial Side YKK® Zipper has Storm Defender® and LiteFire® linings to ensure a warm and dry interior, and ASTM-rated protection against impact, compression and electrical hazards. Item # 462468400g LiteFire® waterproof, breathable insulationAbrasion-resistant toe, side, and heel overlaysCarhartt rubber outsoleCement constructionCement ConstructionComposite safety toeComposite Safety ToeElectrical Hazard ProtectionFastDry™ moisture-wicking textile liningLace entryLeather and Ariaprene™ upperLiteFire™ InsulationMedial-zipper entry with YKK® hardware and Velcro® topline tabMeets ASTM F2413-11 M I/75 C/75 EH standards for Impact, Compression, and Electrical Hazard protectionMidsole-integrated randOrthoLite®Ortholite® anti-microbial, polyurethane-cushioned footbedPadded collar and tongueProtective toe and heel bumpersStorm Defender® waterproof, breathable interior membraneStyle Number: CMA8359