The Muzzle Brake Blouse provides optimal stretch, breathability, and durability where each property is needed most, ensuring comfort and protection from the elements in hot, humid jungle and desert operations. Its GORE® Military Fabric is stronger, lighter, faster drying and more breathable than traditional NYCO (Nylon Cotton) fabrics. It remains comfortable in hot environments, and meets no melt/no drip requirements. The Insect Shield™ treatment protects against mosquitoes, ticks, and other biting insects. Hook and loop pocket for included EVA foam elbow pad.