Features of the Mammut Machu Hat High-quality, robust, windproof, waterproof Mammut DRYTechnology Pro material with 20,000 mm water column and 15,000 g/m^2/24h water vapor permeability Mesh inner lining Adjustable, detachable drawstring Lightweight with low packing volume Fabric Details 100% Polyamide Membrane material: 100% Polyurethane Lining material: 100% Polyamide Weight: 70 g