The N3-B Parka is Alpha's ultimate cold weather parka designed to keep you warm. The N-3B was developed for crew personnel subjected to extreme cold climates. The N-3B is mainly issued to air crews assigned to troop transports, helicopters and strategic bombers. The hood is lined with synthetic mouton and trimmed with removable synthetic coyote fur. The outer shell is water repellent DuPont Type 6-6 nylon flight satin, The lining is 100% nylon with polyester batting interlining. The jacket also has elbow reinforcement patches, inset knitted cuffs, adjustable hood with take-up strap and tunneled drawstrings, the Alpha Signature Zippered utility/pencil pocket, full length storm flap, and raglans sleeves.