WT/SQ YD=approx 11.8 oz.(1680 denier), 7.7 oz (840 denier), 100% nylon fabric with a polyurethane coating and a durable water repellent (DWR) finish. 1680 denier is even more durable and abrasion resistant than 1000 denier Cordura (listed below). The 840 denier is more flexible than the 1680 denier and more abrasion resistant than the 500 denier Cordura (listed below) Import. Uses: luggage, packs, reinforcement patches. Wash Code= 1 ROLL SIZE = 50 YDS