Boost 650 20F/-6°C

Spacious, semi-rectangular bag when you want it, toasty mummy bag when you need it—the lightweight and packable Boost 650 empowers you to truly be comfortable in the backcountry. • WarmZip™ Tech: Patent-pending center zipper design reduces the bag’s internal space and tucks insulation around the sleeper to boost warmth by up to 10°F/6°C. • Power to the Sleeper: Enjoy the spacious freedom of the semi-rectangular bag or the cozy warmth of a mummy bag—pick the shape and temperature that keeps you comfy at night with just a zip. • Multi-Use Arm Holes: Reach the WarmZip, read a book, play cards or simply ventilate—do it all while tucked into your sleeping bag. • Puffed Up & Zoned Out: Ample 650-fill RDS-certified hydrophobic down is allocated to key areas with Zoned Insulation to maximize heat retention and minimize overall weight. • Eco-Conscious Product: Shell and liner are made of GRS-certified 100% recycled, soft-to-the-touch nylon and coated with PFAS-free DWR. • 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. • Comes with compression sack and storage sack Colour: Morning Blue Weight: 1737g Fits: 198cm Girth, Shoulder: 196 cm Girth, Hip: 191 cm Girth, Foot box: 155 cm Packed dimension: 33 x 19cm EN Comfort: 0°C EN Limit: -6°C EN Extreme: -23°C Fill: 650-Fill Duck PFAS-Free Hydrophobic Down, RDS Fill weight: 733 g Liner fabric: 20D 100% Recycled Nylon Ripstop Shell fabric: 20D 100% Recycled Nylon Ripstop Zipper side: Left