{"product_id":"the-winter-vault-aegismax-goose-down-sleeping-bag","title":"The Winter Vault | AEGISMAX 95% White Goose Down Mummy Sleeping Bag, FP800 G1-G5","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp style=\"line-height:1.8;\"\u003eCold does not care how much you spent on a tent. It moves through fabric, settles under a sleeping pad and finds the space between a shoulder and a hood. The AEGISMAX mummy bag is built around that reality: 95 percent white goose down rated to FP800, held in place by offset baffles and a side block baffle so the fill cannot migrate away from the body during the night.\u003c\/p\u003e\n\u003cp style=\"line-height:1.8;\"\u003eThe shell is iFlex 15D nylon with a DWR finish and a high-density down-proof weave, inner and outer, with a differential cut shell and 3D side walls that give the down room to loft without being flattened by the liner. The rated comfort range reaches from minus 10 to minus 20 degrees C, which places the bag in genuine winter territory rather than a three-season compromise. Two bags can be spliced together for couples, and the range runs from G1 through G5 in M and L lengths, so the fill weight can be matched to the trip rather than guessed at.\u003c\/p\u003e\n\u003cp style=\"line-height:1.8;\"\u003eDown is chosen for reasons that survive contact with a pack: warmth per gram, compressibility and a service life measured in seasons rather than washes. For alpine work, winter car camping or a long-distance hike where every gram is argued over, this is the layer that decides whether the night is recoverable.\u003c\/p\u003e\n\u003cp style=\"line-height:1.8;\"\u003e\u003cem\u003eWarmth is not a luxury item. It is the difference between a morning that starts and one that does not.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin:26px 0;border:0;border-top:1px solid #eee;\"\u003e\n\u003cdiv class=\"product-features\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:19px;margin-bottom:12px;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;line-height:1.75;\"\u003e\n\u003cli style=\"margin-bottom:9px;\"\u003e✦ 95 percent white goose down fill rated to FP800\u003c\/li\u003e\n\u003cli style=\"margin-bottom:9px;\"\u003e✦ Offset baffles and side block baffle to prevent down migration\u003c\/li\u003e\n\u003cli style=\"margin-bottom:9px;\"\u003e✦ Differential cut shell with 3D side walls for full loft\u003c\/li\u003e\n\u003cli style=\"margin-bottom:9px;\"\u003e✦ iFlex 15D nylon shell with DWR and high-density down-proof weave\u003c\/li\u003e\n\u003cli style=\"margin-bottom:9px;\"\u003e✦ Comfort rating between minus 10 and minus 20 degrees C\u003c\/li\u003e\n\u003cli style=\"margin-bottom:9px;\"\u003e✦ Splicing design to join two bags into a double\u003c\/li\u003e\n\u003cli style=\"margin-bottom:9px;\"\u003e✦ Five fill grades, G1 to G5, in M and L lengths\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-specs\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:19px;margin-bottom:12px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;line-height:1.75;\"\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Cold weather mummy sleeping bag, winter rated\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eFilling:\u003c\/strong\u003e 95 percent white goose down, FP800\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eShell fabric:\u003c\/strong\u003e iFlex 15D nylon with DWR, down-proof weave\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eInner fabric:\u003c\/strong\u003e iFlex 15D nylon, soft skin-facing finish\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eBaffle construction:\u003c\/strong\u003e Offset baffles plus side block baffle\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eComfort temperature:\u003c\/strong\u003e minus 10 to minus 20 degrees C\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eLength options:\u003c\/strong\u003e Lengthened, suits 1.8 m to 2 m user height\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e M and L\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eConfigurations:\u003c\/strong\u003e G1 to G5 fill grades, single or spliced double\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #ececec;\"\u003e\n\u003cstrong\u003eCustomisation:\u003c\/strong\u003e Available on request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-applications\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:19px;margin-bottom:12px;\"\u003eApplication Scenarios\u003c\/h3\u003e\n\u003cp style=\"line-height:1.8;\"\u003eWinter mountaineers match a G4 or G5 fill grade to exposed bivouac nights where the temperature holds below freezing for hours. Motorcycle tourers and car campers pick the mid grades for late-season trips where a three-season bag fails in February. Couples splice two bags for shared warmth without the weight penalty of a double. Long-distance hikers carry the lighter G1 and G2 grades for shoulder-season routes where pack weight is the limiting factor, and expedition leaders issue differing grades across a team based on each person's cold tolerance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:19px;margin-bottom:12px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eQ: How cold can this bag be used?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eThe comfort scale spans minus 10 to minus 20 degrees C, which places it in winter and exposed shoulder-season use rather than three-season camping.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eQ: What does FP800 mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eIt is the fill power of the 95 percent white goose down, a measure of how much volume a given weight of down lofts, and therefore how much warmth it holds per gram.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eQ: What stops the down from shifting to one side?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eThe bag uses offset baffles plus a side block baffle, and a differential cut shell with 3D side walls, so the fill stays distributed around the body.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eQ: Can two bags be joined?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eYes. The design supports splicing, so two bags can be zipped into a double for shared use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eQ: Which size should I choose?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eThe lengthened cut suits users from 1.8 m to 2 m in height and is offered in M and L, with fill grades G1 through G5 covering warm through severe conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eQ: How should the bag be stored between trips?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eStore it loose in a breathable storage sack rather than compressed, so the FP800 goose down keeps its loft and the baffles keep their shape between seasons.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eQ: Will it suit a user around 1.9 m tall?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eThe lengthened cut is designed for users from 1.8 m to 2 m in height, offered in M and L with fill grades G1 through G5.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-gallery\" style=\"margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;\"\u003e\n\u003cdiv style=\"flex:1 1 260px;max-width:320px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/HTB1eX9kSpXXXXbIaFXXq6xXFXXXy.jpg?v=1670468831\" alt=\"product image\" style=\"width:100%;height:auto;border-radius:6px;display:block;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;max-width:320px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/H1d6f5d3bfe1348e181860372f8c93685e.jpg?v=1670468833\" alt=\"product image\" style=\"width:100%;height:auto;border-radius:6px;display:block;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;max-width:320px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/H04ef9f008e8f4f63b7c5faa603a7b06aV.jpg?v=1670468834\" alt=\"product image\" style=\"width:100%;height:auto;border-radius:6px;display:block;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;max-width:320px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/H7e1aa48d39cc4e1eb5a382cc4841b6417.jpg?v=1670468835\" alt=\"product image\" style=\"width:100%;height:auto;border-radius:6px;display:block;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;max-width:320px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/Hc9ac5dc38edc42bab094daeb6908f952c.jpg?v=1670468837\" alt=\"product image\" style=\"width:100%;height:auto;border-radius:6px;display:block;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;max-width:320px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/H6462fb641e1c4aeaa40bc8dca27edb7cN.jpg?v=1670468839\" alt=\"product image\" style=\"width:100%;height:auto;border-radius:6px;display:block;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;max-width:320px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/H91de88e3260140938487ee2646c4d959L.jpg?v=1670468840\" alt=\"product image\" style=\"width:100%;height:auto;border-radius:6px;display:block;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;max-width:320px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/products\/Hc0eec2c0e96a4377baea11a96fa6149ac.jpg?v=1670468842\" alt=\"product image\" style=\"width:100%;height:auto;border-radius:6px;display:block;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"The Winter Vault | AEGISMAX 95% White Goose Down Mummy Sleeping Bag, FP800 G1-G5\",\n  \"description\": \"Cold does not care how much you spent on a tent. 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