Zip Closure & Storm Flap 7 – Zip Closure & Storm Flap this season. This lightweight parka jacket is from the latest Genius collection between the Alpine label and the godfather of Japanese street culture and it’s a perfect blend of the two partners’ aesthetics. It’s crafted entirely from nylon – a durable ripstop at the bottom and a crinkled version at the top – and fitted with a plethora of tech features to ease the transition from mountain to city. Once the sun appears, though, you can pack it away into the large back pocket for easy transportation.