A masterpiece of modern design combining complete GORE-TEX weather protection with performance responsibly-sourced premium goose down, the Therme is made for cold, wet winters. The 750 fill down provides lightweight warmth, while Coreloft synthetic insulates areas prone to moisture. The GORE-TEX fabric - waterproof, windproof, and breathable - is soft and quiet. The adjustable StormHood is insulated for additional warmth, and internal cuff gaskets seal out drafts and keep heat in.