The toughest climbs demand insulation that delivers superior warmth without the weight. The super-light fabric unique to Berghaus offers incredible insulation and is twice as strong as the nearest competition. Ground-breaking internal Reflect technology increases your warmth by 10% as the fine mesh reflects body heat back into your core creating unrivalled efficiency. The body-mapped design distributes heat where you need it most and reduces bulk in critical areas, while our Hydrodown® treated with Nikwax® keeps you warmer for longer by repelling water for up to 16 hours so it can carry on workign even when wet. Weight (approx. ):310g (Size M)