{"product_id":"ultralight-sleeping-bag-naturehike-cw400-down","title":"Ultralight Sleeping Bag Naturehike CW400 Down 650FP  L Black","description":"\u003ch2\u003eUltralight Sleeping Bag Naturehike CW400 Down Hybrid Design 650FP Grey\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eUltralight Sleeping Bag\u003c\/strong\u003e Naturehike CW400 is a high-performance insulation system designed for avid adventurers, suitable for three to four-season use across camping, hiking, and traveling journeys. It features a unique hybrid shape that integrates a snug-fitting mummy upper body for head warmth with a spacious rectangular lower body for foot mobility, ensuring flexibility on frosty trails. The bag is constructed from durable 400T 20D ripstop nylon, providing comfort and water resistance, and is equipped with sturdy YKK zippers and a total weight of 0.88 Kg. This specialized equipment is filled with 400g of premium 85% white duck down, utilizing 650 fill power to establish an efficient thermal barrier by trapping air within the down clusters to maintain a comfort rating of 4.7°C (40.4°F). This optimized warmth-to-weight ratio is vital for ultralight backpacking, technical outdoor shoes, and equipment setups, allowing users to significantly reduce pack volume while guaranteeing a restful sleep. At unfolded dimensions of 85x220, it ensures ultimate comfort and unparalleled insulation, making it a reliable piece of waterproof gear for extensive outdoor expeditions.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e➤ \u003cstrong\u003eHybrid design:\u003c\/strong\u003e Combines a mummy upper body for head warmth with a rectangular lower body to enhance foot mobility.\u003c\/li\u003e\n\u003cli\u003e➤ \u003cstrong\u003ePremium insulation:\u003c\/strong\u003e Filled with 400g of 85% high-quality white duck down, offering superior warmth with a 650 fill power rating.\u003c\/li\u003e\n\u003cli\u003e➤ \u003cstrong\u003eDurable build:\u003c\/strong\u003e Constructed from 400T 20D ripstop nylon for comfort and effective water resistance against the elements.\u003c\/li\u003e\n\u003cli\u003e➤ \u003cstrong\u003eTemperature optimized:\u003c\/strong\u003e Engineered for performance in three to four-season conditions, offering a transition limit down to -0.4°C (31.2°F).\u003c\/li\u003e\n\u003cli\u003e➤ \u003cstrong\u003eReliable hardware:\u003c\/strong\u003e Equipped with sturdy YKK zippers for smooth operation and long-lasting durability in demanding outdoor environments.\u003c\/li\u003e\n\u003cli\u003e➤ \u003cstrong\u003eCompact portability:\u003c\/strong\u003e Weighs only 0.88 Kg and compresses down to a folded size of φ18*35 for easy backpacking and travel.\u003c\/li\u003e\n\u003cli\u003e➤ \u003cstrong\u003eVersatile application:\u003c\/strong\u003e Ideal for frosty trails, camping under the stars, or as a comfortable option for hotel stays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eA shoulder-season trek through the glacial valleys of the Prokletije Mountains in Albania requires gear that manages frosty trail conditions and rapid temperature drops effectively. This Ultralight Sleeping Bag Naturehike CW400 provides critical warmth when setting up camp in the remote, high-altitude meadows found throughout the Balkan Peninsula. Its 400T 20D ripstop nylon shell serves as a critical barrier against condensation and moisture, protecting the down insulation during overnight stays. The hybrid design allows hikers to keep the mummy hood tight against mountain drafts as temperatures approach the -0.4°C (31.2°F) limit, while utilizing the spacious envelope foot box for comfort.\u003c\/p\u003e\n\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCW™400 Down Ultralight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eHybrid (Mummy Upper\/Envelope Lower)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Material\u003c\/td\u003e\n\u003ctd\u003e400T 20D Ripstop Nylon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilling\u003c\/td\u003e\n\u003ctd\u003e85% White Duck Down, 400g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFill Power\u003c\/td\u003e\n\u003ctd\u003e650FP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComfort High\u003c\/td\u003e\n\u003ctd\u003e13.2°C \/ 55.7°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComfort Rating\u003c\/td\u003e\n\u003ctd\u003e4.7°C \/ 40.4°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimit Temperature\u003c\/td\u003e\n\u003ctd\u003e-0.4°C \/ 31.2°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtreme Temperature\u003c\/td\u003e\n\u003ctd\u003e-15.8°C \/ 3.5°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZippers\u003c\/td\u003e\n\u003ctd\u003eYKK zippers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.88 Kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnfolded Size\u003c\/td\u003e\n\u003ctd\u003e85 x 220 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFolded Size\u003c\/td\u003e\n\u003ctd\u003eφ18 x 35 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeasons\u003c\/td\u003e\n\u003ctd\u003e3-4 Seasons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eMaterials and Design\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid Chamber Construction:\u003c\/strong\u003e Features a specialized design with a mummy-style upper body for head warmth and a rectangular lower body to provide extensive foot mobility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRipstop Nylon Shell:\u003c\/strong\u003e The exterior is crafted from 400T 20D ripstop nylon, engineered for durability, comfort, and crucial water resistance on frosty trails.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite Duck Down Filling:\u003c\/strong\u003e Insulated with 400g of premium 85% white duck down, providing superior warmth at a 4.7°C (40.4°F) comfort rating with a 650 fill power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYKK Hardware:\u003c\/strong\u003e Equipped with sturdy YKK zippers for smooth operation and long-lasting performance in the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltralight Specifications:\u003c\/strong\u003e Designed for efficiency with a total weight of 0.88 Kg and a compact folded size of φ18*35 cm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAbout Naturehike\u003c\/h4\u003e\n\u003cp\u003eNaturehike is a globally recognized manufacturer specializing in ultralight outdoor equipment and professional-grade camping gear suitable for expeditions and travel. The brand is dedicated to rigorous quality control standards and technical heritage to ensure reliability across all seasons and climates. Naturehike focuses on developing innovative sleeping systems, tents, hiking footwear, and accessories that balance minimal weight with high-performance metrics for outdoor enthusiasts.\u003c\/p\u003e","brand":"Naturehike","offers":[{"title":"Default Title","offer_id":53072360636754,"sku":"NH18C400-DB","price":145.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/7188\/4370\/files\/Untitleddesign-2026-04-03T095902.249.jpg?v=1775199962","url":"https:\/\/outfish.lv\/en\/products\/ultralight-sleeping-bag-naturehike-cw400-down","provider":"Outfish","version":"1.0","type":"link"}