Blaklader decked out its cotton workpants with a durable synthetic fabric that it claims makes the X1600 line last four times longer than denim. Cordura, an abrasion-resistant textile, forms leg shields from the upper thigh to below the knees and strengthens the utility pockets, zippered side pockets, and cuffs. Dual-shelf pockets let wearers customize placement of the knee pads, and the molded fitting behind the knee gives the pants a broken-in feel. 800.948.6452.