{"product_id":"nemo-equipment-sonic-down-mummy-sleeping-bag","title":"NEMO Equipment Sonic Down Mummy Sleeping Bag","description":"\u003cp\u003eThe NEMO Sonic is a down mummy sleeping bag built for extreme cold, available in 0°F and -20°F temperature ratings and in Short, Regular, and Long lengths. The shell and liner are 100% recycled, bluesign-approved fabrics. Fill is 800-fill-power hydrophobic down that is PFAS-free and certified to the Responsible Down Standard (RDS), which requires verified animal welfare practices throughout the supply chain. Chevron baffle construction compartmentalizes the down to prevent migration and maintain even loft across the bag.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermo Gill vents:\u003c\/strong\u003e Integrated multistage zipper system extends the usable temperature range and allows fine-tuned comfort adjustment from inside the bag.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChevron baffles:\u003c\/strong\u003e Baffle geometry compartmentalizes down to prevent migration and keep fill evenly lofted throughout the bag.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToester waterproof footbox:\u003c\/strong\u003e Waterproof and breathable footbox uses a layer of synthetic insulation to protect down from moisture, resist tent-wall condensation, and retain warmth at the toes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStretch knee panels:\u003c\/strong\u003e Stretch construction at the knees accommodates side sleeping without restricting movement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOffset zipper:\u003c\/strong\u003e Zipper placement creates a thermally efficient seal and an updated profile that secures warmth closer to the body.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRedesigned draft collar and tubes:\u003c\/strong\u003e Bolstered draft collar and draft tubes block cold air infiltration at the neck and zipper.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature ratings:\u003c\/strong\u003e 0°F and -20°F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFill:\u003c\/strong\u003e 800-fill-power hydrophobic down, PFAS-free, RDS-certified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShell and liner:\u003c\/strong\u003e 100% recycled fabrics, bluesign-approved\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFootbox insulation:\u003c\/strong\u003e Synthetic (waterproof\/breathable layer)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable lengths:\u003c\/strong\u003e Short, Regular, Long (not all lengths available in all temperature ratings)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NEMO Equipment","offers":[{"title":"-20℉ \/ Regular","offer_id":46131064406086,"sku":"811666034540","price":679.99,"currency_code":"USD","in_stock":true},{"title":"-20℉ \/ Long","offer_id":46131064438854,"sku":"811666034557","price":749.99,"currency_code":"USD","in_stock":true},{"title":"0℉ \/ Short","offer_id":46131064471622,"sku":"811666034519","price":579.99,"currency_code":"USD","in_stock":true},{"title":"0℉ \/ Regular","offer_id":46131064504390,"sku":"811666034526","price":599.99,"currency_code":"USD","in_stock":true},{"title":"0℉ \/ Long","offer_id":46131064537158,"sku":"811666034533","price":679.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/2203\/1686\/files\/kwtwkybdhuctlxy1n2bs.png?v=1786588281","url":"https:\/\/terrainvault.com\/products\/nemo-equipment-sonic-down-mummy-sleeping-bag","provider":"TerrainVault","version":"1.0","type":"link"}