{"product_id":"therm-a-rest-boost-650-20f-6c-down-sleeping-bag-short-wide-adjustable-shape-warmth","title":"Therm-a-Rest Boost 650 20F\/-6C Down Sleeping Bag, Short Wide — Adjustable Shape \u0026 Warmth","description":"\u003cp\u003eComfort is not a one-size-fits-all proposition, and the Therm-a-Rest Boost 650 sleeping bag is rated to 20F (-6C) with an adjustable shape for customizing warmth. Its spacious semi-rectangular design invites side sleeping, shifting, and relaxing, while a center WarmZip lets you tailor heat and fit on the fly. For backcountry nights that swing between cool and damp, this bag adapts rather than forces you into a single silhouette.\u003c\/p\u003e\n\u003ch3\u003eFlexible warmth and shape\u003c\/h3\u003e\n\u003cp\u003eWarmZip is a patent-pending center zipper that can reduce the bag’s internal space and wrap insulation around you. When zipped, it converts to a thermally efficient mummy shape that concentrates heat where you need it most. Depending on conditions, this feature can add up to 10 F (6 C) of warmth by reducing the volume your body has to heat.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCenter WarmZip concentrates insulation for extra warmth\u003c\/li\u003e\n\u003cli\u003eUnzip for more space, ideal for side sleepers and restless nights\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInsulation that targets warmth without waste\u003c\/h3\u003e\n\u003cp\u003eThe Boost 650 uses 650-fill hydrophobic down that’s zoned to keep critical areas warm while saving bulk where it matters least. Hydrophobic down sheds moisture and dries faster, helping you stay comfortable in variable weather.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eZoned insulation places down at top, core, and shoulders for maximum heat efficiency\u003c\/li\u003e\n\u003cli\u003e650-fill down with hydrophobic properties resists dampness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaterials and finish you can feel\u003c\/h3\u003e\n\u003cp\u003eThe shell and liner are made from 100% recycled nylon that feels soft to the touch. A PFAS-free DWR coating adds a layer of weather resistance without compromising the bag’s feel. The result is a warm bag with a lighter environmental footprint.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePFAS-free DWR coating reduces environmental impact\u003c\/li\u003e\n\u003cli\u003e100% recycled nylon shell and liner feel soft and lightweight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign details that matter in the field\u003c\/h3\u003e\n\u003cp\u003eTwo-way side zippers give you venting options from torso to feet, while arm holes allow you to reach the WarmZip without fully opening the bag. For additional comfort, it includes a puff collar, draft tube along the zipper line, and a cinchable hood to seal warmth in drafty nights. Durable YKK anti-snag pulls minimize snags and tears on rough trails.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-way zipper for flexible ventilation\u003c\/li\u003e\n\u003cli\u003eArm holes provide easy access to the center zipper while preserving warmth\u003c\/li\u003e\n\u003cli\u003eYKK anti-snag pulls protect fabrics and zippers from damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSize, weight, and packability\u003c\/h3\u003e\n\u003cp\u003eThe Short Wide version provides extra shoulder room and a comfortable fit for those who move around at night. It weighs 2 lb 13 oz (1.27 kg), measures 73 x 37.5 in, and packs down to 10 x 6.5 in. Includes a storage bag and compression stuff sack for compact transport.\u003c\/p\u003e\n\u003cp\u003eWith inclusive sizing and thoughtful warmth zoning, the Boost 650 is built for backpacking in variable backcountry conditions. It offers space to breathe and rest without promising guaranteed outcomes, leaving room for your personal comfort preferences on every trip.\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 is WarmZip and how does it affect warmth?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: WarmZip centers insulation and can add up to 10F\/6C of warmth by reducing internal space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Who should consider the Boost 650 Short Wide?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Great for sleepers who move a lot or need extra shoulder room without compromising warmth.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Therm-a-Rest","offers":[{"title":"Default Title","offer_id":41897761177680,"sku":"B0DP6DLL1F","price":633.02,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/9645\/8576\/files\/therm-a-rest-boost-650-closed-bag.jpg?v=1765551591","url":"https:\/\/canadawildco.com\/products\/therm-a-rest-boost-650-20f-6c-down-sleeping-bag-short-wide-adjustable-shape-warmth","provider":"Canada WildCo. | Hunting Gear, Fishing Equipment \u0026 Outdoor Essentials for the Canadian Wild","version":"1.0","type":"link"}