The Jerven Fjellduken Extreme was developed at the request of the Norwegian Armed Forces - a wind protection warm enough in winter to replace a sleeping bag. The same outer fabric as the original Fjellduken, only with PrimaLoft padding 170 g/m². With a length of 220 cm, Jerven Fjellduken Extreme offers more legroom and freedom than the original and thermo. The screen measures 102 x 220 cm. The outer material of the Fjellduken is completely coated with aluminium on the inside and is waterproof. Thanks to the aluminium coating, heat is rediffused and kept in the insulation, like a rescue blanket. Both side opening zippers, sleeve openings and reinforced eyelets offer a wide variety of uses. So it can be used as a poncho, tarpaulin, sleeping bag, sleeping bag, sleeping bag and even as a hammock. During the tests of the Oulo Regional Institute in winter, at an outdoor temperature of -10°C, the temperature inside the closed Jerven Fjellduken was +15°C – a temperature difference of 29°C. The only source of heat was the person inside the bivouac bag. The Jerven Fjellduken Original achieved a temperature difference of 9°C in the same test. 10-year warranty. Only the best raw materials from Jerven are used for the production of Jerven Fjellduken. The raw materials and sewing work are checked with the utmost care. Therefore Jerven offers a 10-year **on possible material or sewing errors. However, the **does not cover damage caused by fire, sharp objects or improper use. In addition, the Jerven Fjell Jerven must be washed, impregnated and maintained in accordance with the recommendations. Package includes: 1 x rescue flag with reflective elements and fixing straps, 2 x sleeves and 1 x compression bag. Made in Norway.