This U.S. Military Wind Jacket is a low-bulk easy-packing layer designed to take on blowing wind and sand. Slim fit leaves room for body armor or cold weather outer layers. Moisture-wicking mesh lining helps regulate body heat in warm climates. Gen 3, Level 4 of U.S. Military ECWCS (Extended Cold Weather Clothing System) Water-repellent 98/2 nylon/spandex in Army Digital Breathable mesh lining Designed to fit under body armor Angled chest pockets Hook-and-loop sleeve pockets Elastic cuffs Hook-and-loop patches for adding insignia