Therm-A-Rest Boost 650 -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.

FEATURES:

• 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

SPECIFICATIONS:

Colour: Morning Blue

Weight: 1205g

Fits: 183cm

Girth, Shoulder: 163 cm

Girth, Hip: 152 cm

Girth, Foot box: 155 cm

Packed dimension: 32 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: 649 g

Liner fabric: 20D 100% Recycled Nylon Ripstop

Shell fabric: 20D 100% Recycled Nylon Ripstop

Zipper side: Left