{"title":"Sleeping Bags","description":"\u003cp\u003eDown mummy bags for cold British nights. Every listing states the fill weight in grams, the down type and the dimensions — the figures the manufacturer confirms. No comfort temperature, because none of these bags has been laboratory-tested to ISO 23537.\u003c\/p\u003e","products":[{"product_id":"mummy-down-sleeping-bag","title":"Northern Warmth Mummy Down Sleeping Bag","description":"\u003cp\u003eA tapered down mummy bag for cold British nights. Choose the fill weight for the conditions you actually camp in — the grams are printed on every listing, because that is the figure that decides how warm you are.\u003c\/p\u003e\u003ch3\u003eChoosing the fill weight\u003c\/h3\u003e\u003cp\u003eWe have not had this bag laboratory-tested, so what follows is our own guidance rather than a tested rating. More down means more warmth and more weight, in that order.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e400 g\u003c\/strong\u003e — summer nights, festivals, hut and hostel use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600 g\u003c\/strong\u003e — British spring and autumn camping, the option most people end up with.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e800 g\u003c\/strong\u003e — late autumn, exposed pitches, anyone who sleeps cold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1000–1200 g\u003c\/strong\u003e — winter and frost, car camping where the packed size matters less.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"\/pages\/fill-guide\"\u003eRead the full fill guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eIt opens out flat\u003c\/h3\u003e\u003cp\u003eUnzipped all the way round, the bag lies flat as a quilt or a ground mat — useful in a van, in an awning, or as something warm to put a child on. It packs back into the compression sack that comes with it.\u003c\/p\u003e\u003ch3\u003eCare\u003c\/h3\u003e\u003cp\u003eStore the bag loose, never compressed. Wash rarely, with a down-specific detergent on a cold gentle cycle, then tumble dry low with two clean tennis balls until the clusters separate completely — expect two or three cycles. Do not dry clean.\u003c\/p\u003e","brand":"Northern Warmth","offers":[{"title":"400 g \/ Black","offer_id":48853557313721,"sku":"SU00347787-Black-400g","price":99.0,"currency_code":"GBP","in_stock":true},{"title":"400 g \/ Blue","offer_id":48853557346489,"sku":"SU00347787-Blue-400g","price":99.0,"currency_code":"GBP","in_stock":true},{"title":"400 g \/ Red","offer_id":48853557379257,"sku":"SU00347787-Red-400g","price":99.0,"currency_code":"GBP","in_stock":true},{"title":"600 g \/ Black","offer_id":48853557412025,"sku":"SU00347787-Black-600g","price":109.0,"currency_code":"GBP","in_stock":true},{"title":"600 g \/ Blue","offer_id":48853557444793,"sku":"SU00347787-Blue-600g","price":109.0,"currency_code":"GBP","in_stock":true},{"title":"600 g \/ Red","offer_id":48853557477561,"sku":"SU00347787-Red-600g","price":109.0,"currency_code":"GBP","in_stock":true},{"title":"800 g \/ Black","offer_id":48853557510329,"sku":"SU00347787-Black-800g","price":119.0,"currency_code":"GBP","in_stock":true},{"title":"800 g \/ Blue","offer_id":48853557543097,"sku":"SU00347787-Blue-800g","price":119.0,"currency_code":"GBP","in_stock":true},{"title":"800 g \/ Red","offer_id":48853557575865,"sku":"SU00347787-Red-800g","price":119.0,"currency_code":"GBP","in_stock":true},{"title":"1000 g \/ Black","offer_id":48853557608633,"sku":"SU00347787-Black-1000g","price":129.0,"currency_code":"GBP","in_stock":true},{"title":"1000 g \/ Blue","offer_id":48853557641401,"sku":"SU00347787-Blue-1000g","price":129.0,"currency_code":"GBP","in_stock":true},{"title":"1000 g \/ Red","offer_id":48853557674169,"sku":"SU00347787-Red-1000g","price":129.0,"currency_code":"GBP","in_stock":true},{"title":"1200 g \/ Black","offer_id":48853557706937,"sku":"SU00347787-Black-1200g","price":139.0,"currency_code":"GBP","in_stock":true},{"title":"1200 g \/ Blue","offer_id":48853557739705,"sku":"SU00347787-Blue-1200g","price":139.0,"currency_code":"GBP","in_stock":true},{"title":"1200 g \/ Red","offer_id":48853557772473,"sku":"SU00347787-Red-1200g","price":139.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/3100\/3321\/files\/27231758-2dbd-44c1-bb2f-a03af1a5598e.jpg?v=1787412066"},{"product_id":"envelope-down-sleeping-bag","title":"Northern Warmth Envelope Down Sleeping Bag","description":"\u003cp\u003eA rectangular down bag for people who cannot sleep wrapped tight. It opens flat as a quilt, and two of them zip together into a double — which is what makes it the bag couples and van campers actually keep.\u003c\/p\u003e\u003ch3\u003eWhat the manufacturer states\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation:\u003c\/strong\u003e white goose down\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShell and lining:\u003c\/strong\u003e 400T 15D water-repellent nylon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e envelope, opens flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 200 × 80 cm (Military Green: 200 × 73 cm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoins:\u003c\/strong\u003e two bags zip together into a double\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoosing the fill weight\u003c\/h3\u003e\u003cp\u003eOur own guidance, not a tested rating. An envelope bag has more air inside it than a mummy, so it needs a little more down for the same night.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300 g\u003c\/strong\u003e — summer, festivals, indoors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400 g\u003c\/strong\u003e — British spring and autumn.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600 g\u003c\/strong\u003e — cold autumn nights and van use in winter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNo temperature rating\u003c\/h3\u003e\u003cp\u003eThis bag has not been laboratory-tested to ISO 23537, so we do not print a comfort figure. \u003ca href=\"\/pages\/temperature-ratings\"\u003eHere is why\u003c\/a\u003e.\u003c\/p\u003e","brand":"Northern Warmth","offers":[{"title":"300 g \/ Navy","offer_id":48891051868345,"sku":"SU00055613-Navy-300g","price":99.0,"currency_code":"GBP","in_stock":true},{"title":"300 g \/ Military Green","offer_id":48891051901113,"sku":"SU00055613-Green-300g","price":99.0,"currency_code":"GBP","in_stock":true},{"title":"400 g \/ Navy","offer_id":48891051933881,"sku":"SU00055613-Navy-400g","price":109.0,"currency_code":"GBP","in_stock":true},{"title":"400 g \/ Military Green","offer_id":48891051966649,"sku":"SU00055613-Green-400g","price":109.0,"currency_code":"GBP","in_stock":true},{"title":"600 g \/ Navy","offer_id":48891051999417,"sku":"SU00055613-Navy-600g","price":129.0,"currency_code":"GBP","in_stock":true},{"title":"600 g \/ Military Green","offer_id":48891052032185,"sku":"SU00055613-Green-600g","price":129.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/3100\/3321\/files\/e6dfe055-1474-4a75-9491-405557c00bd2.jpg?v=1787490459"},{"product_id":"expedition-down-sleeping-bag","title":"Northern Warmth Expedition Down Sleeping Bag","description":"\u003cp\u003eThe same mummy bag as our three-season model, built with between one and a half and two kilos of duck down in it. This is the version for frost on the inside of the flysheet — hard winter, exposed pitches, and anyone who has spent a night shivering and decided never again.\u003c\/p\u003e\u003ch3\u003eChoosing the fill weight\u003c\/h3\u003e\u003cp\u003eOur own guidance, not a tested rating. More down means more warmth and more bulk, in that order.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1500 g\u003c\/strong\u003e — British winter, snow on the ground, wild camping in January.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1800 g\u003c\/strong\u003e — hard frost and long nights, or if you sleep cold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2000 g\u003c\/strong\u003e — expedition use and altitude, where being cold is not an inconvenience but a problem.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBelow 1500 g, see the \u003ca href=\"\/products\/mummy-down-sleeping-bag\"\u003ethree-season bag\u003c\/a\u003e instead.\u003c\/p\u003e\u003ch3\u003eIt opens out flat\u003c\/h3\u003e\u003cp\u003eUnzipped all the way round, the bag lies flat as a quilt — useful in a van or an awning. It packs back into the compression sack that comes with it.\u003c\/p\u003e\u003ch3\u003eNo temperature rating\u003c\/h3\u003e\u003cp\u003eThis bag has not been laboratory-tested to ISO 23537, so we do not print a comfort figure. At this fill weight the honest description is: colder than most people will ever camp in. \u003ca href=\"\/pages\/temperature-ratings\"\u003eHere is why we say it that way\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eCare\u003c\/h3\u003e\u003cp\u003eStore the bag loose, never compressed. Wash rarely, with a down-specific detergent on a cold gentle cycle, then tumble dry low with two clean tennis balls until the clusters separate. Do not dry clean.\u003c\/p\u003e","brand":"Northern Warmth","offers":[{"title":"1500 g \/ Black","offer_id":48891254243513,"sku":"SU00347787-Black-1500g","price":179.0,"currency_code":"GBP","in_stock":true},{"title":"1500 g \/ Blue","offer_id":48891254276281,"sku":"SU00347787-Blue-1500g","price":179.0,"currency_code":"GBP","in_stock":true},{"title":"1500 g \/ Red","offer_id":48891254309049,"sku":"SU00347787-Red-1500g","price":179.0,"currency_code":"GBP","in_stock":true},{"title":"1800 g \/ Black","offer_id":48891254341817,"sku":"SU00347787-Black-1800g","price":199.0,"currency_code":"GBP","in_stock":true},{"title":"1800 g \/ Blue","offer_id":48891254374585,"sku":"SU00347787-Blue-1800g","price":199.0,"currency_code":"GBP","in_stock":true},{"title":"1800 g \/ Red","offer_id":48891254407353,"sku":"SU00347787-Red-1800g","price":199.0,"currency_code":"GBP","in_stock":true},{"title":"2000 g \/ Black","offer_id":48891254440121,"sku":"SU00347787-Black-2000g","price":219.0,"currency_code":"GBP","in_stock":true},{"title":"2000 g \/ Blue","offer_id":48891254472889,"sku":"SU00347787-Blue-2000g","price":219.0,"currency_code":"GBP","in_stock":true},{"title":"2000 g \/ Red","offer_id":48891254505657,"sku":"SU00347787-Red-2000g","price":219.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/3100\/3321\/files\/27231758-2dbd-44c1-bb2f-a03af1a5598e_24f52487-f260-40b3-978f-147e7e31a633.jpg?v=1787490619"}],"url":"https:\/\/northernwarmthgear.com\/collections\/sleeping-bags.oembed","provider":"Northern Warmth","version":"1.0","type":"link"}