The Carhartt Detroit Rugged Flex S3 6" Zip Safety Boot is a professional S3 certified work boot made entirely of the highest quality suede leather with hydrophobic properties. Key features and elements of the boots: Material: Full, suede leather with hydrophobic properties Boot height 6 inches (6") Upper and tongue lined for extra comfort, finished with leather for durability PU insole provides all-day comfort Zipper on the inside for easy putting on Vibram® anti-slip sole provides grip, traction (SRC) and contact heat protection (HRO) Anti-puncture Gzero textile plate Ergonomic fiberglass toe cap protects against impacts up to 200J Meets EN ISO 20345: 2012 and AS/NZS 2210.3: 2009 standards S3 certified, the boots meet the rigorous requirements of the S3 standard Toe cap, made of fiberglass withstands 200J impact Rugged Flex®, a stretchy garment that meets Carhartt’s specific stretch and durability standards. You’ll find Rugged Flex® in shorts, shirts, pants, jackets and shoes because you need gear that helps you move, not gear that holds you back. Midfoot stabilization Lightweight construction