100% Waterproof with a Hydro Static Head in Excess of 5000mm (Items with a Hydrostatic Head over 1500mm are generally considered waterproof) Ripstop Weave Lightweight Tough Breathable (will transmit upto 7.5 litres of moisture per m2 per 24 hours) Soft to the touch Completely Windproof (trapping and stopping the movement of warm air in the sleeping bag or Garment) Outer Fabric treated with a Durable Water Repellant. (water repellancy can be maintained by a cool tumble dry after washing and periodic retreatment with suitable after care products such as Nikwax or Grangers) Completely manufactured within Europe (Extruded, Woven and Dyed & Finished) As a breathable Bivvi Bag (Waterproof sleeping bag outer) or a shell fabric in waterproof jackets. It is important to note that as this solid coating air cannot pass so care should be taken not to completely seal any bivvi bag system to prevent suffocation. Zip: No zip Shape: Bivouac Weight: 340g (inc. compression stuff sack) Size: One size fits over all standard Snugpak sleeping bags Fabric: Paratex Dry