{"product_id":"the-spark-18-professional-ultralight-expedition-sleeping-bag","title":"The Spark -18 | Professional Ultralight Expedition Sleeping Bag","description":"\u003cp style=\"font-size: 16px; line-height: 1.6; color: #1a1a1a; margin-bottom: 30px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\"\u003ePush the boundaries of alpine exploration with The Spark -18. Designed for the elite minimalist who demands maximum thermal efficiency with minimum bulk, this bag represents the pinnacle of ultralight engineering. Utilizing ultra-fine technical textiles and high-loft hydrophobic insulation, it provides a formidable barrier against freezing temperatures while remaining light enough for high-velocity mountain pursuits.\u003c\/p\u003e\n\u003cdiv style=\"background-color: #f0f4f7; border-radius: 8px; margin-bottom: 12px; overflow: hidden; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"display: flex; justify-content: space-between; align-items: center; padding: 20px; cursor: pointer; list-style: none; font-size: 15px; font-weight: 600; color: #34495e;\"\u003eThermal Engineering \u0026amp; Materials \u003cspan style=\"font-size: 18px; color: #34495e;\"\u003e↓\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 20px 20px 20px; color: #4a5568; line-height: 1.6; font-size: 14px;\"\u003e\n\u003cul style=\"padding-left: 20px; margin: 0;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eHigh-Loft Insulation:\u003c\/strong\u003e Filled with premium ethically sourced down, treated for superior moisture resistance to maintain thermal integrity in damp environments.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eUltralight Shell:\u003c\/strong\u003e Crafted from 10D and 7D technical nylon fabrics — so fine they allow the insulation to reach its maximum loft instantly.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eVertical Chest Baffles:\u003c\/strong\u003e Specialized internal architecture prevents down migration during movement, keeping warmth centered at your core.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e Laboratory-certified for extreme conditions down to -18°C (0°F).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f0f4f7; border-radius: 8px; margin-bottom: 12px; overflow: hidden; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"display: flex; justify-content: space-between; align-items: center; padding: 20px; cursor: pointer; list-style: none; font-size: 15px; font-weight: 600; color: #34495e;\"\u003eDimensions \u0026amp; Technical Metrics \u003cspan style=\"font-size: 18px; color: #34495e;\"\u003e↓\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 20px 20px 20px; color: #4a5568; line-height: 1.6; font-size: 14px;\"\u003e\n\u003cul style=\"padding-left: 20px; margin: 0;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eOptimized Weight:\u003c\/strong\u003e A masterclass in weight reduction, engineered to vanish into your pack without sacrificing survival-grade warmth.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eContoured Silhouette:\u003c\/strong\u003e A technical mummy fit designed to eliminate dead air space and maximize thermal efficiency.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eCompressibility:\u003c\/strong\u003e Designed to compress to the size of a small water bottle, making it the ideal choice for minimalist expeditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZipper System:\u003c\/strong\u003e Features a high-reliability side zipper with an integrated draft tube to prevent heat loss.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f0f4f7; border-radius: 8px; margin-bottom: 12px; overflow: hidden; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"display: flex; justify-content: space-between; align-items: center; padding: 20px; cursor: pointer; list-style: none; font-size: 15px; font-weight: 600; color: #34495e;\"\u003eLogistics \u0026amp; Protection \u003cspan style=\"font-size: 18px; color: #34495e;\"\u003e↓\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 20px 20px 20px; color: #4a5568; line-height: 1.6; font-size: 14px;\"\u003e\n\u003cul style=\"padding-left: 20px; margin: 0;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eHydrophobic Finish:\u003c\/strong\u003e A specialized coating on the down prevents the absorption of sweat and condensation, keeping you dry and warm.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eAdjustable Hood:\u003c\/strong\u003e 3D-shaped hood that can be cinched tight to retain heat in the most extreme alpine bivouacs.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e Best maintained with technical down washes; use a low-heat tumble dry with clean tennis balls to restore its extreme loft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColorway:\u003c\/strong\u003e A sophisticated Grey exterior with technical Yellow accents for visibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f0f4f7; border-radius: 8px; margin-bottom: 12px; overflow: hidden; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"display: flex; justify-content: space-between; align-items: center; padding: 20px; cursor: pointer; list-style: none; font-size: 15px; font-weight: 600; color: #34495e;\"\u003eThe Presentation \u003cspan style=\"font-size: 18px; color: #34495e;\"\u003e↓\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 20px 20px 20px; color: #4a5568; line-height: 1.6; font-size: 14px;\"\u003e\n\u003cp style=\"margin-bottom: 15px;\"\u003eThe Spark -18 is delivered in our premium technical packaging, reflecting the elite engineering of your new expedition tool.\u003c\/p\u003e\n\u003cul style=\"padding-left: 20px; margin: 0;\"\u003e\n\u003cli\u003eThe Spark -18 Ultralight Sleeping Bag\u003c\/li\u003e\n\u003cli\u003eTechnical Compression Silnylon Stuff Sack\u003c\/li\u003e\n\u003cli\u003eStorage Cube for long-term loft preservation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":56311181377922,"sku":null,"price":469.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/2380\/6338\/files\/Photoroom_20260204_212538.jpg?v=1770229407","url":"https:\/\/taiyuantrade.com\/products\/the-spark-18-professional-ultralight-expedition-sleeping-bag","provider":"TAIYUAN TRADE LIMITED","version":"1.0","type":"link"}