Therm-A-Rest Boost 650 32F Sleeping Bag

$279.95 - $299.95
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Ultra-comfy three-season backpacking sleeping bag with adjustable shape and warmth.

 

Customoizable Comfort: Enjoy the spacious feedom 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 10°F/6°C.

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.

Additional Features: YKK anti-snag zippers, cinchable hood, zipper draft tube, puffed draft collar, and a two-way entry zipper.

 

Specifications for Regular and Long Sleeping Bags

Feature Regular Long
Weight 2 lb 2 oz 2 lb 7 oz
Length 80 in 85 in
Fits 72 in 78 in
Girth Shoulder 64 in 65 in
Girth Hip 60 in 61 in
Girth Foot box 61 in 61 in
Packed Dimensions 10 in x 6.5 in 11 in x 6.5 in
EN Comfort (F) 41°F 41°F
EN Limit (F) 32°F 32°F
EN Extreme (F) 5°F 5°F
Fill Material 650 Fill Duck PFAS-Free Hydrophobic Down, RDS 650 Fill Duck PFAS-Free Hydrophobic Down, RDS
Fill Weight 14 oz 1 lb
Shell Fabric 20D 100% Recycled Nylon Rip Stop 20D 100% Recycled Nylon Rip Stop
Lining Fabric 20D 100% Recycled Nylon Rip Stop 20D 100% Recycled Nylon Rip Stop
Zipper Side Left Left