Developed in the USA during the early 1950s for military use, the N-3B Parka was designed to protect from the most extreme and harsh cold weather while leaving a small tunnel or “snorkel” to look through. N-3B Snorkel Parka consists of a Water-Repellent Nylon shell and Heavyweight Interior filling, for the utmost protection from extreme weather conditions. The parka features an adjustable hood with artificial wool-fur collar, knit wrist cuffs, drawstring waist for adjustments, and a storm flap above the zipper. In addition, N-3B Snorkel Parka has plenty of pockets with button closures and a zippered utility pocket with pen/pencil pockets on the left arm. carries a full line of military parkas and outerwear.