{"product_id":"kelty-cosmic-down-20-f-7-c-550-fill-sleeping-bag-regular-dark-blue-pageant-blue","title":"Kelty Cosmic Down 20°F (-7°C) 550-Fill Sleeping Bag - Regular - Dark Blue\/Pageant Blue","description":"\u003ch3 tabindex=\"0\"\u003eAbout the Cosmic Down 20\u003c\/h3\u003e\n\u003cp\u003eRemember the trapezoid from high school geometry? Turns out, this funky ol' shape is ideal for helping sleeping bags retain heat. Our trapezoidal baffle construction is just one of the reasons the Cosmic Down is still our favorite three-season superstar. We also love the expanded natural-fit footbox for happier feet, zippered stash pocket and fully recycled fabrics and PFAS-free DWR treatment. The Cosmic Down is the total package.\u003c\/p\u003e\n\u003cp\u003ePRODUCT SKU - 35413724\u003c\/p\u003e\n\u003ch3 tabindex=\"0\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTrapezoidal baffle construction provides enhanced thermal efficiency\u003c\/li\u003e\n\u003cli\u003eLofty, lightweight and warm 550 Fill Down\u003c\/li\u003e\n\u003cli\u003eButtery-soft and durable, fully-recycled shell and liner fabrics with PFAS-free DWR\u003c\/li\u003e\n\u003cli\u003eZippered internal stash pocket keeps your favorite devices close at hand\u003c\/li\u003e\n\u003cli\u003eFull draft tube and collar retain heat and enhance comfort\u003c\/li\u003e\n\u003cli\u003eQuad-stitch anti-snag zipper makes getting in and out easy\u003c\/li\u003e\n\u003cli\u003eDual locking sliders for venting versatility\u003c\/li\u003e\n\u003cli\u003eExpanded, natural fit footbox = more room to wiggle your toes\u003c\/li\u003e\n\u003cli\u003eStuff sack included, for quick and easy departures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eUnderstanding the Temperature Rating \u0026amp; Sleep System\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eWhat the 20°F \/ -7°C rating means\u003c\/b\u003e\u003cbr\u003eKelty rates the Cosmic Down 20 using the \u003cb\u003eEN 13537 \/ ISO 23537\u003c\/b\u003e standard — the same lab-tested protocol used across the outdoor industry for consistent bag-to-bag comparison. Under this standard, three values are established:\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\n\u003cb\u003eComfort rating (woman): ~32°F \/ 0°C\u003c\/b\u003e — the temperature at which a standard cold sleeper can expect a comfortable night's rest in a relaxed posture.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\n\u003cb\u003eLower Limit rating (man): 20°F \/ -7°C\u003c\/b\u003e — the temperature at which a standard warm sleeper can sleep curled up without waking from cold. This is the figure Kelty markets as the bag's rating.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\n\u003cb\u003eExtreme rating: ~-4°F \/ -20°C\u003c\/b\u003e — a survival threshold only; sustained sleep at this temperature is not expected to be comfortable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eTested sleep system\u003c\/b\u003e\u003cbr\u003eEN\/ISO ratings are conducted with the sleeper on a \u003cb\u003ethermal insulation mat (R-value 2.0 \/ ISO value ~0.5 m²K\/W)\u003c\/b\u003e. A sleeping mat is therefore required to achieve the stated rating — without one, cold from the ground will compress the bag's down beneath you and significantly reduce warmth. For cold-weather camping, a mat with an R-value of 3.0 or higher is recommended.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003ePersonal cold sensitivity \u0026amp; insulation quality\u003c\/b\u003e\u003cbr\u003eReal-world comfort varies from the lab figure. Factors that affect how warm you sleep include:\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\n\u003cb\u003eMetabolism \u0026amp; sleep style\u003c\/b\u003e — cold sleepers may find the comfort threshold is closer to 32°F \/ 0°C rather than the lower limit figure.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\n\u003cb\u003eFill power\u003c\/b\u003e — the Cosmic Down uses 550-fill down. Higher fill-power down (e.g. 800+) lofts more per gram; at the same weight this bag prioritises value over ultralight performance.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\n\u003cb\u003eMoisture \u0026amp; humidity\u003c\/b\u003e — damp down loses loft rapidly. Keep the bag dry and store it uncompressed when not in use.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\n\u003cb\u003eLayering\u003c\/b\u003e — wearing a baselayer, hat and socks inside the bag can add several degrees of effective warmth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eWhen to choose a warmer bag\u003c\/b\u003e\u003cbr\u003eConsider stepping up to a lower-rated bag (e.g. 0°F \/ -18°C) if you: camp regularly at or below 20°F \/ -7°C, identify as a cold sleeper, plan high-altitude or winter trips, or cannot use a high-R-value mat. The Cosmic Down 20 is best suited as a \u003cb\u003ethree-season bag\u003c\/b\u003e for conditions down to its lower limit rating with an appropriate mat.\u003c\/p\u003e\n\u003ch3 tabindex=\"0\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"kt-desc__content\"\u003e\n\u003cp\u003e\u003cstrong\u003eAll Sizes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 20 °¸F \/ -7 °¸C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBag Shape\u003c\/strong\u003e: \u003cspan\u003eSemi-Rectangular\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eShort\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits to:\u003c\/strong\u003e 5' 6\" \/ 168 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2 lb. 3 oz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill weight:\u003c\/strong\u003e 14.6 oz. \/ 415 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStuff Sack Size:\u003c\/strong\u003e 7\" x 13\" \/ 18 x 33 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 72 in \/ 183 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShoulder Circumference:\u003c\/strong\u003e 58 in \/ 147 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHip Circumference:\u003c\/strong\u003e 56 in \/ 142 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoot Circumference:\u003c\/strong\u003e 43 in \/ 109 cm\u003c\/li\u003e\n\u003c\/ul\u003e\nRegular\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits to:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e6' 0\" \/ 183 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2 lb. 7 oz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill weight:\u003c\/strong\u003e 16.4 oz. \/ 464 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStuff Sack Size:\u003c\/strong\u003e 8\" x 13\" \/ 20 x 33 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 78 in \/ 199 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShoulder Circumference:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e62 in \/ 158 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHip Circumference:\u003c\/strong\u003e 58 in \/ 147 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoot Circumference:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e46 in \/ 117 cm\u003c\/li\u003e\n\u003c\/ul\u003e\nLong\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits to:\u003c\/strong\u003e 6' 6\" \/ 198 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2 lb 11 oz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill weight:\u003c\/strong\u003e 18.8 oz. \/ 533 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStuff Sack Size:\u003c\/strong\u003e 8\" x 14\" \/ 20 x 36 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 84 in \/ 214 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShoulder Circumference:\u003c\/strong\u003e 64 in \/ 163 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHip Circumference:\u003c\/strong\u003e 60 in \/ 152 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoot Circumference:\u003c\/strong\u003e 52 in \/ 131 cm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 tabindex=\"0\"\u003eMaterials\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation\u003c\/strong\u003e:\u003cspan\u003e550 Fill Down\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFabric Primary\/Body:\u003c\/strong\u003e \u003cspan\u003eRecycled 20D Nylon Taffeta\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFabric Secondary: \u003c\/strong\u003eRecycled 50D Polyester Taffeta\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Twist Distribution","offers":[{"title":"REGULAR","offer_id":55184731144529,"sku":"35413724RR","price":200.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5522\/0561\/files\/iqzw1vuovcgbxc04k1iw.jpg?v=1791223141","url":"https:\/\/english.army\/ja\/products\/kelty-cosmic-down-20-f-7-c-550-fill-sleeping-bag-regular-dark-blue-pageant-blue","provider":"English.Army","version":"1.0","type":"link"}