Helly Hansen Odin 9 Worlds Jacket

Backcountry.com says:
Original gods lived comfortably atop mountains in tunics or gold armor, and while you enjoy reaching the summit, you need something better bolstered than a bed sheet. The Helly Hansen Men's Odin 9 Worlds Jacket packs phenomenal waterproof ratings into a supremely light, packable design so you can reach the summit in your midlayer and ski through buckets of snow comfortably. Its Helly Tech Professional membrane not only provides excellent waterproof protection, but high levels of breathability to keep comfy if you have to wear it on the ascent. There are zippers under each arm to amplify airflow if that's not enough.