The Berghaus Men's Extrem Micro 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.Hydrodown, powered by Nikwax, is a PFC-free hydrophobic down that provides water repellency for up to 16 hours and is RDS certified for guaranteed ethical sourcing of down products. Nano baffles under the arms and down the side of the body provide body-mapping performance as well as low bulk for comfort and thermal effciency.The Pertex Quantum CS10 fabric is super-lightweight, windproof and breathable. It is constructed from diamond shaped filaments that lock together to provide a more stable construction with greater resistance to snagging and abrasion. Performance tailoring allows for dynamic body movement while climbing and belaying.Other features include a climbing-helmet-compatible hood with front face and rear head adjustment. The peak of the hood is stiffened with micro wire to keep the elements away from your face and an internal stretch gaiter gives improved fit and prevents cold air entry over the top of your head. The two-way YKK Vislon centre front zip can be comfortably used with a climbing or rucksack harness.