Upper: Black Full Grain Leather Construction: Cement Lining: Cosmo Aerospacer/Thoro>dri WATERPROOF System, Blood Borne Pathogen Compliant Insole: Removable Two Density Polyurethane "SHOCK ZONE" Footbed Midsole: Polyurethane Shank: Engineered Composite Outsole: Durable Rubber Sole with 90° Heel Special Features: Non-Metallic Construction. Flexible L-Protection® Puncture-Resisting Insole Material. ASTM F2413-11 M I/75/C/75 COMPOSITE SAFETY TOE. EH Rated. Tested For and Meets CAN/CSA-Z195 Electric Shock Resistance. Meets or Exceeds CAL/OSHA Title 8 Requirements for foot safety toe protection and puncture resistance. Heavy Duty YKK Side Zipper with Velcro Tab Cover.