{"product_id":"1-163224-cobalt-spring-25","title":"ALPS MOUNTAINEERING COBALT SPRING +25°","description":"\u003cp\u003eThe ALPS Mountaineering Cobalt Spring +25°F is a technical, mummy-style sleeping bag engineered for dedicated backpackers, cold-weather hikers, and mountaineering enthusiasts who require a perfect balance of high-efficiency thermal regulation, lightweight portability, and compact packability. By combining a heat-trapping, tapered mummy silhouette with advanced synthetic insulation, this bag organizes your overnight recovery into a warm, streamlined, and highly reliable system built for navigating variable spring or autumn conditions without the excessive weight, bulk, or heat loss found in rectangular leisure bags.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAdvanced Thermal Mummy Geometry: Engineered with a precision-tapered shape that minimizes dead air space around the body, the bag maximizes heat retention and efficiency, ensuring you stay warm even when temperatures drop toward its +25°F comfort rating.\u003c\/li\u003e\n\u003cli\u003eHigh-Performance Insulation: Designed with premium, moisture-resistant synthetic fill, the bag maintains its loft and warming capability even in damp, humid environments, providing a dependable thermal barrier that outperforms traditional down in wet-weather scenarios.\u003c\/li\u003e\n\u003cli\u003eWeight-Optimized Construction: Crafted with lightweight, durable fabrics, the bag offers a superior warmth-to-weight ratio, allowing you to carry essential thermal protection deep into the backcountry without compromising your overall pack load or agility.\u003c\/li\u003e\n\u003cli\u003eTechnical Comfort \u0026amp; Closure: Featuring a contoured hood with a draft collar and an insulated zipper baffle, the bag seals in warmth and prevents cold spots, while the snag-free zipper system allows for quick and reliable entry and exit during cold-weather excursions.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ALPSMOUNTA","offers":[{"title":"Default Title","offer_id":53037461242172,"sku":"1-163224","price":54.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0914\/3379\/5900\/files\/ALPS-MOUNTAINEERING-COBALT-SPRING-25_-33x78IN-SLATE-BLUE.png?v=1780553789","url":"https:\/\/joessportinggoods.com\/products\/1-163224-cobalt-spring-25","provider":"Joe's Sporting Goods","version":"1.0","type":"link"}