Boost 650 32F/0C Down Sleeping Bag - Regular Wide

From backpacking trips to car camping excursions, the Boost 650 provides the dreamy comfort you need to sleep well outdoors. With an innovative design that allows you to adjust its shape and add warmth when needed, the Boost is one of the most comfortable and versatile sleeping bags ever made. The semi-rectangular shape gives you considerably more internal space than a mummy bag—you'll feel unrestricted and free to sleep in whatever position you want all night long. But more space demands more body heat to warm it up and cold isn't comfortable. That's where WarmZip comes in. Zipping up the WarmZip centre zipper transforms the shape of the Boost 650 from a semi-rectangular bag to a thermally efficient mummy bag. It pulls the 650-fill down around your body and reduces the amount of space your body needs to heat. WarmZip gives you the power to add up to 10F/6C to the Boost's temperature rating. Standard Therm-a-Rest features like a puffy draft collar, a draft tube along the entry zipper line and a cinchable hood round out the Boost's bliss-inducing comfort. The Boost 650 was created to provide comfort whether you're drifting off to sleep, already asleep, or fully awake and relaxing in your tent. The armholes let you easily reach the WarmZip without needing to open the side zipper. They also allow you to grab your belongings, read, play cards, or high-five friends without leaving the cosy warmth of your sleeping bag. If you get too warm, you can ventilate through the armholes or sleep comfortably with just your arms outside. Additionally, the two-way side zipper lets you ventilate around your torso or feet. Every zipper on the Boost features a durable YKK anti-snag pull to prevent snags and tears. Despite all this comfort, the Boost 650 isn't bulky or heavy. It was designed specifically for backpacking, with carefully selected materials and design to keep it lightweight, packable, and effective in various backcountry conditions. Zoned Insulation uses 650-fill hydrophobic down in key warmth areas (top, core, and shoulders) while reducing it where it's less useful (bottom), allowing the Boost to provide more warmth with less down. The shell and liner are made from 100% recycled nylon, chosen for its lightness and soft feel. The PFAS-free DWR coating and hydrophobic down ensure the Boost stays warm and comfortable even in wet conditions. Features: • Ultra-comfy warmer weather backpacking sleeping bag with adjustable shape and warmth. • Customizable Comfort: Enjoy the spacious freedom of the semi-rectangular bag or the cosy warmth of a mummy bag—pick the shape and temperature that keeps you comfy at night with just a zip. • WarmZip™ Tech: Patent-pending centre zipper design zips up to reduce the bag's internal space and tuck insulation around the sleeper to boost warmth by up to 10F/6C. • Multi-Use Arm Holes: Reach the WarmZip, read a book, play cards or simply ventilate—do it all while tucked into your sleeping bag for elevated liveability. • Plush & Puffy: 650-fill RDS-certified hydrophobic down is allocated to key areas with Zoned Insulation for refined heat efficiency and maximum cosiness. • Shell and liner are made of GRS-certified 100% recycled, soft-to-the-touch nylon and coated with PFAS-free water repellent. • Inclusive Sizing: Each size—Small, Regular, Long—is also available in a Wide size, so you get the bag you want in the fit you need. • Additional Features: YKK anti-snag zippers, cinchable hood, zipper draft tube, puffed draft collar, and a two-way entry zipper. • What's Included: Compression Sack, Storage Sack • Weight: 1121g • Comfort: 5°C, Limit: 0°C, Extreme: -15°C • Fits: 183cm • Girth Shoulder: 193cm, Girth Hip: 188cm, Girth Footbox: 155cm • Packed Dimensions: 28 x 17 cm • Fill material: 650-Fill Duck PFAS-Free Hydrophobic Down, RDS • Shell and Lining: 20D 100% Recycled Nylon Rip Stop