The N-3B parka is a military-style winter coat originally designed for use by the United States Air Force. It features a durable nylon shell, a warm insulation layer, and a fur-lined hood, making it suitable for extreme cold weather conditions. The parka is typically knee-length, providing additional coverage and warmth. This outerwear is often associated with cold weather and military fashion, and it has become popular in civilian life for its practicality and style. The N-3B parka is known for its functionality, including multiple pockets for storage and a wind-resistant design, making it a favored choice for outdoor activities.