Thermarest Boost 650 32F/0C - Regular / Meadow Green

The Therm-a-Rest Boost 650 32F/0C is a versatile down sleeping bag designed to adapt between spacious comfort and efficient warmth.

Featuring an expandable design, it can be opened out for extra room in milder conditions or zipped into a more thermally efficient mummy shape when temperatures drop. Filled with 650-fill hydrophobic down, it offers reliable insulation with good compressibility, making it a flexible option for three-season camping and backpacking.

User height: 183cm / 6"

WarmZip Open Girth (interior): Shoulder: 163 cm (64"). Hip: 152cm (60").  Foot: 155cm (61")

WarmZip Closed Girth (interior): Shoulder: 163 cm (64"). Hip: 135cm (53").  Foot: 132cm (52")

Key Features:

• Customizable Comfort: 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.
  
• WarmZip™ Tech: Patent-pending center 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 livability. 
  
• Plush & Puffy: 650-fill RDS-certified hydrophobic down is allocated to key areas with
• Zoned Insulation for refined heat efficiency and maximum coziness. 
  
• Eco-Conscious Materials: 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.