{"product_id":"therm-a-rest-boost-650-20f-6c-down-sleeping-bag-short-adjustable-shape-warmth","title":"Therm-a-Rest Boost 650 20F\/-6C Down Sleeping Bag, Short | Adjustable Shape \u0026 Warmth","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Therm-a-Rest Boost 650 20F\/-6C Sleeping Bag, Short, is built for flexibility in the backcountry. It combines a roomy semi-rectangular interior with an intelligent shape-shifting system, so you can customize space and warmth to match your night’s conditions. The result is a comfortable, versatile bag that supports different sleeping styles without sacrificing performance.\u003c\/p\u003e\n\u003ch3\u003eAdjustable shape and warmth\u003c\/h3\u003e\n\u003cp\u003eWith its semi-rectangular design, you get generous interior space for side sleeping, shifting, and relaxing. When you zip the WarmZip center zipper, the bag morphs into a tighter, mummy-like form. This reduces the interior volume your body has to heat and surrounds you with insulated down—boosting warmth by up to 10F\/6C. The transformation is designed to be smooth and practical, so you can adapt on the fly as the night evolves.\u003c\/p\u003e\n\u003ch3\u003eComfort and convenience\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePuffy draft collar and a draft tube along the zipper line minimize drafts and preserve warmth.\u003c\/li\u003e\n  \u003cli\u003eInclusive sizing, including Wide options, helps accommodate broad shoulders and restless sleepers for a more comfortable night.\u003c\/li\u003e\n  \u003cli\u003eMulti-use arm holes give you easy access to the WarmZip, keep warmth in, and allow hands-on activities like reading or sipping a hot drink.\u003c\/li\u003e\n  \u003cli\u003eTwo-way side zipper enables venting or targeted warmth around the torso and feet.\u003c\/li\u003e\n  \u003cli\u003eAll zippers feature durable YKK anti-snag pulls to reduce snags and tears in rugged backcountry use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaterials, warmth, and sustainability\u003c\/h3\u003e\n\u003cp\u003eThe Boost 650 uses 650-fill hydrophobic down placed in key warmth-retention zones (top, core, shoulders) to maximize heat where it matters while conserving loft where it helps least. The shell and liner are 100% recycled nylon with a PFAS-free DWR coating, and the down is RDS-certified, balancing performance with responsible sourcing. The combination helps keep you warm in damp weather without adding unnecessary weight.\u003c\/p\u003e\n\u003ch3\u003ePackability, weight, and dimensions\u003c\/h3\u003e\n\u003cp\u003eDesigned for backpacking, the Short size weighs 2 lb 4 oz (1.02 kg) and measures 73 x 31.5 in (188 x 80 cm). It packs down to 9.5 x 6.5 in (24 x 17 cm) and includes a storage bag and compression stuff sack. The bag is tailored to deliver warmth and comfort across variable backcountry conditions while staying light enough for fast-paced trips.\u003c\/p\u003e\n\u003ch3\u003eWhy readers choose the Boost 650\u003c\/h3\u003e\n\u003cp\u003eFor campers who value both space and warmth, the Boost 650 offers a practical path between a roomy comfort and efficient heat retention. The adjustable shape, thoughtful drafts control, and eco-minded materials combine to support restful sleep without overpromising outcomes. It’s a versatile option that aims to adapt to your preferences and the night’s conditions, making your outdoor nights more approachable and enjoyable.\u003c\/p\u003e\n\u003ch3\u003eKey specs at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e650-fill hydrophobic down, zoned for efficiency\u003c\/li\u003e\n  \u003cli\u003eRDS-certified down; PFAS-free DWR\u003c\/li\u003e\n  \u003cli\u003eShell and liner: 100% recycled nylon\u003c\/li\u003e\n  \u003cli\u003eShort size: 73 x 31.5 in; weight 2 lb 4 oz\u003c\/li\u003e\n  \u003cli\u003ePack size: 9.5 x 6.5 in; includes storage bag\u003c\/li\u003e\n\u003c\/ul\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 is a center zipper that reduces interior space, boosting warmth by up to 10F\/6C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the size and weight specs for the Short version?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Short weighs 2 lb 4 oz (1.02 kg); dimensions are 73 x 31.5 in; packs to 9.5 x 6.5 in.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Therm-a-Rest","offers":[{"title":"Default Title","offer_id":42015107711056,"sku":"B0DN3T4YRN","price":595.35,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/9645\/8576\/files\/therm-a-rest-boost-650-20f-short-semi-rectangular-design.jpg?v=1771530516","url":"https:\/\/canadawildco.com\/products\/therm-a-rest-boost-650-20f-6c-down-sleeping-bag-short-adjustable-shape-warmth","provider":"Canada WildCo. | Hunting Gear, Fishing Equipment \u0026 Outdoor Essentials for the Canadian Wild","version":"1.0","type":"link"}