{"product_id":"therm-a-rest-boost-650-20f-6c-down-sleeping-bag-large-wide-adjustable-shape-for-comfort","title":"Therm-a-Rest Boost 650 20F\/-6C Down Sleeping Bag, Large Wide | Adjustable Shape for Comfort","description":"\u003ch2\u003eAdaptive comfort for real-world sleep on the move\u003c\/h2\u003e\n\u003cp\u003eThe Therm-a-Rest Boost 650 is designed to fit how you actually sleep. Its roomy semi-rectangular form gives you space to roll onto a side, stretch out, or shift during the night. When conditions change or you crave a leaner profile, the built-in WarmZip center zipper tucks insulation around you and narrows the internal chamber, transforming the bag into a warmer mummy shape without removing any layers. This clever adjustability means you can fine-tune warmth and space to match the night, rather than squeezing into a one-size-fits-all bag.\u003c\/p\u003e\n\u003cp\u003eKey warmth comes from thoughtful insulation placement. The 650-fill hydrophobic down is prioritized around the top, core, and shoulders while tapering towards the bottom, creating more warmth where you need it most without adding unnecessary weight. The result is a balanced blend of heat retention and packability that appeals to backpackers who value versatility as much as comfort. The shell and liner are made from 100% recycled nylon with a PFAS-free DWR, blending performance with a lighter environmental footprint.\u003c\/p\u003e\n\u003ch3\u003eSmart design details to boost warmth and ease\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarmZip center zipper\u003c\/strong\u003e can reduce internal space and boost warmth by up to 10°F (6°C) in suitable conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInclusive sizing\u003c\/strong\u003e includes Wide options for broader shoulders and restless sleepers, plus a centered zipper for balanced fit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy arm access\u003c\/strong\u003e with multi-use arm holes—reach, sip a drink, or stay warm without breaking the seal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo-way side zipper\u003c\/strong\u003e allows ventilation or partial entry without compromising warmth.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable hardware\u003c\/strong\u003e YKK anti-snag pulls reduce snags and tears over time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHydrophobic down\u003c\/strong\u003e helps keep you comfortable in damp conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightweight and packable\u003c\/strong\u003e design tailored for backpacking with a compact pack size.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterials you can feel good about\u003c\/strong\u003e 100% recycled nylon shell\/liner with PFAS-free DWR for a softer touch and lower environmental impact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSize, weight, and packing\u003c\/h3\u003e\n\u003cp\u003eThe Boost 650 in Long Wide weighs about 3 lb 13 oz (1.74 kg) and measures 85 × 38.5 in (216 × 98 cm). It packs down to roughly 14.5 × 7.5 in (37 × 19 cm) and comes with a storage bag and compression stuff sack, making it a practical choice for hikers and travelers who value space efficiency without sacrificing warmth.\u003c\/p\u003e\n\u003cp\u003eWhether you’re pitching in alpine camps, coastal mist, or backcountry bivouacs, the Boost 650 offers a flexible sleep experience. Its combination of warmth, adjustability, and responsible materials supports a broad range of adventures without promising guaranteed outcomes—use it as a possibility rather than a guarantee, and tailor it to your night.\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: How does WarmZip affect warmth and ventilation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: WarmZip reduces internal space and can boost warmth by up to 10°F (6°C), depending on conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Who benefits most from the Boost 650?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Backpackers needing adjustable shape, broad-shoulder comfort, and strong packability in variable backcountry weather.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Therm-a-Rest","offers":[{"title":"Default Title","offer_id":42016282968144,"sku":"B0DN44KY3B","price":821.34,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/9645\/8576\/files\/therm-a-rest-boost650-hood-draft-collar.jpg?v=1771578659","url":"https:\/\/canadawildco.com\/products\/therm-a-rest-boost-650-20f-6c-down-sleeping-bag-large-wide-adjustable-shape-for-comfort","provider":"Canada WildCo. | Hunting Gear, Fishing Equipment \u0026 Outdoor Essentials for the Canadian Wild","version":"1.0","type":"link"}