Thorogood Side-zip 8" waterproof boot. Blood borne pathogen compliant, non-metallic construction, heavy duty YKK zipper. Upper: Black Full Grain Leather/Black Action Leather/1200 Denier Nylon Construction: Cement Lining: Two Zone Wicking Mesh / Thoro>dri™ WATERPROOF System, Blood Borne Pathogen Compliant. Insole: Removable Two Density Polyurethane "SHOCK ZONE" Footbed with Air Flow Vents Shank: Composite Outsole: Two Density Rubber with Integrated EVA Impact Pads Special Features: Molded rubber Heel Stabilizer. Non-Metallic Construction. Heavy Duty YKK Side Zipper.