The N-2B parka was introduced in the mid 1950s for U.S. Air Force air and ground crews. It replaced the N-2A. Alpha started making the N-2B for the DOD in 1963. Some of the classic mil-spec features were the front pass-through pockets (so that pilots could reach their pants pockets without being exposed to sub-freezing temps), split hood that unzips to lay flat, and the zippered utility/pencil pocket (originally called the cigarette/pencil pocket) with pencil point protectors. We went on to make the N-2B parka for the U.S. armed forces for the next 33 years. Today we make the same short-waist parka for the commercial market that maintains the features from the military version.