HIGH TENACITY NYLON CORDURA® CANVAS IN ITS LIGHTEST VERSION. (TRADEMARK CORDURA® CERTIFICATE TO BE REQUESTED AT TIME OF BULK ORDER / THE USE OF THE CORDURA® TRADEMARK MUST BE OBTAINED BY FOLLOWING THE PROCEDURE ON WWW.CORDURA.COM). , ENHANCED WITH A DENSE WAX-RESIN TREATMENT AND BONDED TO A WATERPROOF, WINDPROOF, AND BREATHABLE MEMBRANE.