THE WP.1 ORIGINAL WORK PANT IN KHAKI IS MADE FROM 8.2 OUNCE (280GSM) TENSILE280™ COTTON CANVAS WITH DURA500™ADVANCED NYLON AND POLYURETHANE CANVAS ABRASION PANELS. DURA500™ IS A 500 DENIER NYLON OXFORD TREATED WITH POLYURETHANE FOR HIGH TENSILE STRENGTH AND PERFORMANCE DURABILITY. DURA500™ PROVIDES LONG-LASTING ENHANCED TEAR AND ABRASION RESISTANCE.