{"product_id":"sac-de-couchage-grand-froid-naturehike-jv1300","title":"Extreme cold sleeping bag -17°C | Naturehike JV1300","description":"\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.78 kg (M) \/ 1.88 kg (L)\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 87 x 193 cm (M) \/ 87 x 203 cm (L)\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003ePacked size:\u003c\/strong\u003e ɶ27 x 45 cm\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFill:\u003c\/strong\u003e 750 FP white goose down, 90% down, 1000mm cleanliness, \u003cstrong\u003eRDS certified\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFill weight:\u003c\/strong\u003e 1300g\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eOuter fabric:\u003c\/strong\u003e 20D Toray nylon, DWR water-repellent treatment\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eLining:\u003c\/strong\u003e 10D down-proof nylon\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eComfort temperature:\u003c\/strong\u003e -17.7°C\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eLimit temperature:\u003c\/strong\u003e -26.7°C\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eThermal standard:\u003c\/strong\u003e GB\/T 38426 \/ ISO 23537\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch2\u003e1300g extreme cold sleeping bag for demanding winter treks\u003c\/h2\u003e\n\u003cp\u003eThe Naturehike JV1300 is an \u003cstrong\u003eextreme cold sleeping bag\u003c\/strong\u003e designed for demanding winter conditions: high-altitude bivouacs, winter treks, or expeditions in extreme cold. A fill of \u003cb\u003e1300g of 750 FP white goose down\u003c\/b\u003e, 90% down, 1000mm cleanliness, and RDS certification provides substantial insulation within a temperature range measured according to GB\/T 38426 and ISO 23537. The comfort rating of -17.7°C corresponds to a standard user sleeping in a relaxed position. The limit of -26.7°C is the equilibrium threshold for men in a curled-up position. The extreme of -52.7°C is a theoretical survival threshold and should never be confused with the target usage.\u003c\/p\u003e\n\u003ch3\u003eExtreme cold thermal construction: vertical velvet and baffles\u003c\/h3\u003e\n\u003cp\u003eThe \u003cb\u003evertical velvet\u003c\/b\u003e construction keeps the fill in a fixed position within each chamber, eliminating down shifting and cold spots at the seams. The zip baffle blocks cold air infiltration along the \u003cb\u003eanti-snag YKK\u003c\/b\u003e zipper. Anti-wind side strips on both sides reduce heat loss from the flanks. The adjustable collar insulates the neck area. The covered 3D footbox protects the feet without compressing the fill. These features are exclusive to the 1000g and 1300g versions.\u003c\/p\u003e\n\u003ch3\u003eToray 20D fabric and independent laboratory certification\u003c\/h3\u003e\n\u003cp\u003eThe \u003cb\u003e20D Toray nylon DWR\u003c\/b\u003e outer fabric combines tear resistance with surface water repellency. The \u003cb\u003e10D down-proof nylon\u003c\/b\u003e lining limits fill migration. The dual-zip closure allows for arm movement without leaving the bag. Compressed to ɶ27x45cm and weighing 1.78kg in size M, the JV1300 comes with a compression sack and a mesh bag for long-term storage.\u003c\/p\u003e","brand":"Duvet Nomade","offers":[{"title":"M","offer_id":53947869921617,"sku":"14:200004890#JV1300 M","price":999.0,"currency_code":"EUR","in_stock":true},{"title":"L","offer_id":53947869954385,"sku":"14:200006156#JV1300 L","price":999.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/9173\/4097\/files\/naturehike_jv1300.webp?v=1780522020","url":"https:\/\/duvet-nomade.com\/en\/products\/sac-de-couchage-grand-froid-naturehike-jv1300","provider":"Duvet Nomade","version":"1.0","type":"link"}