THE WS.1 ORIGINAL WORK SHORT IS MADE FROM 8.2 OUNCE (280GSM) TENSILE 280™ 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.