The U.S. Military's current issue cold weather trouser is one of the most technologically advanced cold weather clothing systems in the world. It uses Gore-Tex fabric, which insulates against exposure to prolonged cold and is fully waterproof, windproof, and breathable for use in rain, snow, and sleet. Gore-Tex membrane is laminated between the outer shell and inner fabrics, and Gore-seam tape is applied to all seams to prevent water leaking through the stitch. NOW AVAILABLE IN DESERT CAMO AND BLACK. PLEASE NOTE: Due to current demand and limitations in production, orders placed for Desert Camo will take between 4-6 weeks to ship. All orders are subject to availability. Sizes available Small, Medium, Large, Extra Large, 2X Large, Small-Tall, Medium-Tall, Large-Tall