This year's A1 Jacket is a throwback-inspired piece designed to bring about the nostalgia from our culture's early days. It's burly, rugged, durable and warm as an oven. With zippered pit vents to release excess heat, a low-profile powder skirt for deep days and our Durable Fabric package, this piece of clothing is specifically designed to last multiple seasons and its timeless look helps ensure that. The A1 is A-OK.