Super-versatile Lightweight Mountain Insulation The Extrem™ Micro Down Jacket is a super-versatile lightweight piece of insulation. Climb, ski and trek into the extreme, confident that you have super packable warmth available in an instant. Body-mapping technology was the starting point for the jacket’s design and construction, ensuring the correct balance of warmth is distributed exactly where it’s needed. The warmth is delivered by a newly updated version of our world-first hydrophobic down technology – Hydrodown®, powered by Nikwax. This PFC-free hydrophobic down provides water repellency for up to 16 hours and is RDS certified for guaranteed ethical sourcing of the goose down ... More info