The Tactical Research TR636 CT Maintainer was intended specifically for U.S. Air Force personnel working on the military flight line. A composite toe is ANSI approved and provides toe protection in hazard environments. The Maintainer features a smooth leather upper that is non-porous to liquids and dirt. So oil, grease, and jet fuel can be cleaned off with a cloth and will not leave a stain. An over-lasted midsole provides great shock attenuation and was designed for professionals that are on their feet for long hours during duty. The TR636 CT features non-metallic construction so electrical hazards and x-ray equipment will never be an issue. This boot features a moisture wicking lining for maximum comfort. The TR636 CT is Air Force Airman Battle Uniform (ABU) compliant for official uniform wear.