The WP•1original work pant in navy 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 abrasio