Suede leather with Cordura® 1000 denier for great durability and comfort. High-strength YKK® zipper with Vislon® on the side for easy foot entry and exit. Padding with internal lining on the upper part for calf comfort. Scotchgard® treatment that increases the suede's durability and protects it from stains. Specially designed tongue that prevents the entry of dust and sand. Rust-resistant materials. Antimicrobial AEGIS lining for foot protection. EVA insole for comfort and protection, removable. TEXON material on the boot's sole for stability and lateral support. Seams that join the upper part of the boot with the sole. Non-slip sole that does not slip on water and oils. Certified with ASTM F2913-11 test standards.