{"product_id":"sea-to-summit-spark-ultralight-down-sleeping-bag-0-f-regular","title":"Sea to Summit Spark Ultralight Down Sleeping Bag — 0°F (Regular)","description":"\u003ch3\u003eMeet the Spark: ultralight warmth for adventurous nights\u003c\/h3\u003e\n\u003cp\u003eThe Sea to Summit Spark 0-Degree Ultralight Down Sleeping Bag pairs serious warmth with a featherweight profile, ideal for backpackers, bikepackers, and touring enthusiasts who crave compact packability without sacrificing comfort. With a 0°F (-18°C) rating, it’s designed for cool-to-cold nights where every gram counts. The bag uses high-loft 850+ fill power down that is Responsible Down Standard certified and treated with a proprietary non-PFC Ultra-Dry Down finish to help loft rebound and maintain performance when humidity or dampness challenge the material.\u003c\/p\u003e\n\u003cp\u003eDesigned for a natural sleeping position, the contoured mummy shape and full box baffles work together to trap warmth while maximizing loft. The ultralight 10D nylon shell offers water resistance via a PFC-free DWR, and the 10D liner enhances breathability for all-night comfort. A snag-free YKK #5 zipper ensures smooth operation, so you can adjust to the night’s temperature without hassle. The Spark 0-Degree is available in Regular and Long sizes, and it arrives with an Ultra-Sil compression sack and a storage cube to simplify packing and care.\u003c\/p\u003e\n\n\u003ch3\u003eKey design features at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e0°F (-18°C) rating designed for 3-season backpacking, bike packing, and touring\u003c\/li\u003e\n  \u003cli\u003e850+ fill power down, Responsible Down Standard certified, plus non-PFC Ultra-Dry down treatment for better loft retention\u003c\/li\u003e\n  \u003cli\u003eUltralight 10D shell with PFC-free DWR; breathable 10D liner for all-night comfort\u003c\/li\u003e\n  \u003cli\u003eContoured mummy shape with full box baffles to maximize warmth and natural sleeping position\u003c\/li\u003e\n  \u003cli\u003eYKK #5 zipper for reliable, snag-free operation\u003c\/li\u003e\n  \u003cli\u003eIncludes Ultra-Sil compression sack and storage cube; Sea to Summit lifetime guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIn the field: what to expect\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLightweight and compact packing makes it a strong option for ultralight setups and fast-paced trips\u003c\/li\u003e\n  \u003cli\u003eMoisture resistance and loft retention help maintain warmth in variable conditions\u003c\/li\u003e\n  \u003cli\u003eBreathable liner and efficient shell keep you comfortable through long nights outdoors\u003c\/li\u003e\n  \u003cli\u003eDurability and a lifetime guarantee support long-term use in rugged environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNote: temperature ratings reflect standard testing and do not guarantee specific outcomes for every sleeper. Real-world warmth depends on your layering, sleep system, and local conditions. The Spark bag is designed to offer strong potential warmth and comfort for a variety of adventures.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the Spark 0°F's temperature implications for use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Rated to 0°F (-18°C); comfort depends on your sleep system and layering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What’s included with the Spark bag and is there a warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Includes Ultra-Sil compression sack and storage cube; lifetime guarantee against defects.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Sea to Summit","offers":[{"title":"Default Title","offer_id":41896949121104,"sku":"B0CTD3XRLT","price":1296.17,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/9645\/8576\/files\/sea-to-summit-spark-hood-detail-down-loft_jpg.jpg?v=1765492515","url":"https:\/\/canadawildco.com\/products\/sea-to-summit-spark-ultralight-down-sleeping-bag-0-f-regular","provider":"Canada WildCo. | Hunting Gear, Fishing Equipment \u0026 Outdoor Essentials for the Canadian Wild","version":"1.0","type":"link"}