N-3B Snorkel ParkaStay warm and comfortable this winter with our military styled N 3B Parka. Featuring a heavy duty, water repellent nylon outer shell, this parka jacket easily overcomes rugged terrains and extreme cold weather. From outdoor sports and activities to field missions and emergencies, the snorkel parka will become a must have for your winter wardrobe. ?? Thermal Insulation: These parka coats come equipped with an extremely warm polyester liner and