{"product_id":"womens-ascent-down-sleeping-bag-24c","title":"Women's Ascent Down Sleeping Bag (-24°C)","description":"\u003cp\u003eThe Rab Women's Ascent Down Sleeping Bag is a hand-filled, expedition-rated cold weather bag built for serious backcountry use in winter. With 1,080g of 650FP European duck down enclosed by a 20D Pertex® Quantum shell, it achieves an ISO 23537 comfort rating of -15°C and a limit of comfort of -24°C in a women's-specific wide mummy construction that prioritises side-sleeping comfort over a standard symmetrical mummy design. Hand-filled in Derbyshire by Rab's UK team — never compressed before filling, preserving full loft from the first night.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eL.O.F.T™ baffle construction\u003c\/strong\u003e — Rab's proprietary alternating wide-and-narrow baffle system achieves exceptional warmth-for-weight by distributing down precisely across the bag's surface area. Narrow baffles on high-compression zones and wider baffles where loft is most valuable keep the down working efficiently without the dead zones common in uniform baffle designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSidewall baffles for side sleepers\u003c\/strong\u003e — a detail most bags ignore. Vertical sidewall baffles prevent the down from shifting away from the sides of the bag when you roll onto your flank, eliminating the cold spots and seam pressure that make conventional mummy bags uncomfortable for side sleepers across a long night.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWomen's-specific wide mummy fit\u003c\/strong\u003e — cut with the anatomical proportions of a female body rather than scaled from a male mummy template. The wider shoulder and hip girth and anatomically shaped footbox allow natural sleeping posture without the compressed, constrained feel of a standard mummy bag worn over multiple layers in extreme cold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSynthetic-insulated collar\u003c\/strong\u003e — a close-fitting collar at the neck uses synthetic insulation rather than down for its moisture resistance and shape retention. It seals against the neck without bunching or shifting, closing the critical gap between the hood cinch and the bag's main chamber.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-way YKK® ¾ length main zip with second access zip\u003c\/strong\u003e — the main zip runs ¾ of the bag's length and opens from both ends. The second shorter zip with integrated snap closure allows you to free your arms for cooking, reading, or adjusting layers without releasing heat from the lower bag. Internal zip guard and anti-snag insert throughout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20D Pertex® Quantum shell with fluorocarbon-free DWR\u003c\/strong\u003e — Pertex Quantum is a tightly woven, windproof nylon ripstop specifically developed for high-performance down products. At 38g\/m² it is among the lightest durable fabrics used in this application. The DWR treatment is fluorocarbon-free throughout. 100% recycled outer, second outer, and liner.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e650FP European duck down with Grangers hydrophobic finish\u003c\/strong\u003e — 1,080g of fill, treated with a fluorocarbon-free hydrophobic finish for moisture resistance without PFAS chemistry. The down retains a higher proportion of its loft when exposed to condensation and humidity than untreated fill.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal cordlocks positioned below the collar bone\u003c\/strong\u003e — designed specifically for side sleeping. Standard hood adjustment cordlocks are positioned at the top of the bag where they create pressure on the shoulder or ear when lying on your side. The Ascent's cordlocks sit below the collarbone, remaining accessible and comfortable throughout the night.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCinchable hood and footbox\u003c\/strong\u003e — the hood seals fully around the face in severe conditions via a single drawcord. The roomy anatomically shaped footbox gives toes natural splayed-foot clearance without the cold spots of a tight narrow toe box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZipped internal stash pocket\u003c\/strong\u003e — secure internal pocket for phone, headtorch, and valuables close at hand throughout the night.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand-filled in Derbyshire, UK\u003c\/strong\u003e — Rab fill all their down products by hand at their Derbyshire facility. Down that has never been compressed before its first fill retains full loft from the first use. Machine-filled down is typically compressed during the filling process, requiring a break-in period to reach rated performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo storage solutions included\u003c\/strong\u003e — a drawcord stuff sack for travel and a separate zipped storage sack with a water-resistant base for home storage, keeping the down at full loft when not in use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse the full \u003ca href=\"\/collections\/rab\"\u003eRab range\u003c\/a\u003e or check our \u003ca href=\"https:\/\/www.greatoutdoors.ie\/blogs\/expert-advice\/mountaineering-checklist\"\u003emountaineering gear checklist\u003c\/a\u003e for building a complete winter kit.\u003c\/p\u003e","brand":"Rab","offers":[{"title":"Right Hand Zipper \/ Dark Bluebird","offer_id":53987864084819,"sku":"QSN-27002","price":480.0,"currency_code":"EUR","in_stock":false},{"title":"Left Hand Zipper \/ Dark Bluebird","offer_id":53987864117587,"sku":"QSN-27003","price":480.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0259\/3584\/files\/Ascent_minus24C_minus11F_DarkBluebird_Bluebird_QSN_27_DBD.jpg?v=1781276520","url":"https:\/\/www.greatoutdoors.ie\/products\/womens-ascent-down-sleeping-bag-24c","provider":"Great Outdoors ","version":"1.0","type":"link"}