Cordura® Ripstop construction in high abrasion zones with TruMotion® zonal stretch panels 850D polyester main durable body fabric Zipper thigh vents for maximum ventilation Knee construction made of full grain cow leather and heat abrasion resistant material provide high durability Thin hem at cuff to eliminate bulk in boot Zippered cargo pockets provide storage Strategically placed reflective trims at back yoke for high visibility.