{"product_id":"sea-to-summit-spark-down-sleeping-bag-9c-15f-regular-rds","title":"Sea to Summit Spark Down Sleeping Bag -9C|15F - Regular RDS","description":"\u003cdiv style=\"font-weight: normal !important;\"\u003e\n\u003cp\u003eWhen every gram counts and the mercury drops, the \u003cstrong\u003eSea to Summit Spark Down Sleeping Bag -9C|15F - Regular RDS\u003c\/strong\u003e delivers serious cold-weather performance without the weight penalty that typically comes with it. Built around 850+ fill power 90\/10 goose down treated with Sea to Summit's PFC-free Ultra-Dry Down treatment, this bag punches well above its 730g packed weight for three-season alpine and backcountry use. The ISO-rated lower limit of -9°C and a comfort rating of -2°C (women's) make it a capable choice for everything from high-country hunting camps to multi-day ridge walks where overnight temperatures get genuinely cold. At just 6.8 litres compressed, it disappears into your pack without compromise.\u003c\/p\u003e\n\u003ch2\u003eSea to Summit Spark Down Sleeping Bag -9C|15F - Regular RDS Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e850+ Fill Power 90\/10 Goose Down:\u003c\/strong\u003e High-loft down with an exceptional warmth-to-weight ratio. The 90\/10 goose-to-duck ratio and 850+ fill power rating mean superior insulating performance for the 480g of fill used in this bag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Dry Down Treatment (PFC-free):\u003c\/strong\u003e Down is hydrophobic-treated at the fibre level without the use of PFCs, retaining loft and insulating performance in damp or humid conditions where untreated down would clump and fail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRDS-Certified Down:\u003c\/strong\u003e Responsible Down Standard certification ensures the down is ethically sourced and traceable throughout the supply chain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10D Nylon Shell and Liner (Bluesign-certified, RCS Recycled):\u003c\/strong\u003e Both the outer shell and inner liner are constructed from 10-denier nylon with a PFC-free DWR finish. The ultra-fine 10D fabric keeps weight and pack size minimal, while Bluesign and Recycled Claim Standard certifications confirm responsible manufacturing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Temperature Ratings:\u003c\/strong\u003e Lower limit -9°C, comfort rating -2°C (women's), tested to the EN\/ISO 23537 standard for meaningful, comparable temperature performance data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Box Baffles:\u003c\/strong\u003e Three-dimensional box baffles maintain down loft evenly across the bag, eliminating cold spots that can occur with simpler sewn-through baffle construction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErgonomic Mummy Shape with Anatomical Footbox:\u003c\/strong\u003e The contoured mummy cut reduces dead air space to improve thermal efficiency, while the shaped footbox follows the natural angle of the foot to prevent compressed down at the toe end.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Hood and Zipper Draft Tube:\u003c\/strong\u003e A sculpted hood seals around the head to minimise heat loss, paired with an insulated draft tube behind the full-length zipper to block cold air ingress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYKK #5 Zippers with Zipper Plow:\u003c\/strong\u003e Quality YKK hardware with a zipper plow attachment prevents snagging on fabric or down, ensuring reliable one-handed operation in cold conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZip-Together Compatibility:\u003c\/strong\u003e The full-length zipper is designed to mate with a compatible Sea to Summit Women's Spark sleeping bag, allowing two bags to be joined for shared use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits to 185cm:\u003c\/strong\u003e The Regular size accommodates sleepers up to 185cm in height.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacked Weight and Volume:\u003c\/strong\u003e 730g total bag weight, compressing to 6.8 litres in the included Ultra-Sil Compression Bag, making it suitable for ultralight backpacking where volume and weight are critical considerations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes Ultra-Sil Compression Bag and Storage Cell:\u003c\/strong\u003e Ships with a dedicated compression sack for trail use and a larger mesh storage cell for long-term at-home storage to maintain down loft over time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Sea to Summit Spark -9°C is a well-considered ultralight sleeping bag for backcountry users who need genuine cold-weather capability without the bulk. Whether you're camping out during an extended hunting trip in the high country or pushing into remote terrain on foot, this bag's combination of ethical materials, technical construction, and sub-kilogram weight makes it a serious option for three-season use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Sea to Summit","offers":[{"title":"REG \/ Black","offer_id":50838879502657,"sku":"9327868150694","price":799.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/6475\/3217\/files\/sea_to_summit_spark_down_sleeping_bag_9c15f_regular_rds_asl041072_050105_venture_5.jpg?v=1789095154","url":"https:\/\/venturehunting.com.au\/products\/sea-to-summit-spark-down-sleeping-bag-9c-15f-regular-rds","provider":"Venture Hunting","version":"1.0","type":"link"}