Therm-A-Rest Boost Sleeping Bag

Ultra-comfy warmer weather backpacking sleeping bag with adjustable shape and warmth

23

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Regular price $319.95
Sale price $319.95 Regular price
% off Sold out
Size: Regular

only 1 left in stock

Why we like this product

  • Pick the shape and temperature that keeps you comfy at night with just a zip
  • 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
  • 650-fill, RDS-certified hydrophobic down is allocated to key areas with Zoned Insulation for refined heat efficiency and maximum coziness

The Boost 650 sleeping bag is designed for personalized comfort and adaptability, offering a spacious semi-rectangular shape that allows freedom of movement and side-sleeping comfort. Its innovative WarmZip center zipper transforms the bag into a thermally efficient mummy shape, boosting warmth by up to 10°F (6°C) when needed. Features like a puffy draft collar, cinchable hood, and draft tubes enhance insulation, while convenient arm holes allow for multitasking, ventilation, or sleeping with your arms out. Despite its comfort-focused design, the Boost 650 remains lightweight and packable, using zoned 650-fill hydrophobic down and recycled nylon materials to deliver high performance in varied backcountry conditions—even when wet.

Weight Regular: 2 lb 11 oz
Regular Wide: 3 lb 5 oz
Long: 3 lb 1 oz
Long Wide: 3 lb 13 oz
Length Regular/Regular Wide: 80 in
Long/Long Wide: 85 in
Fits Regular/Regular Wide: 72 in
Long/Long Wide: 78 in
Girth Shoulder Regular: 64 in
Regular Wide: 76 in
Long: 65 in
Long Wide: 77 in
Girth Hip Regular: 60 in
Regular Wide: 74 in
Long: 61 in
Long Wide: 75 in
Girth Foot Box 61 in
Packed Dimensions Regular: 12.5" x 7.5"
Regular Wide: 13.5" x 7.5"
Long: 13" x 7.5"
Long Wide: 14.5" x 7.5"
Comfort Rating 32° F
Fill Material 650 Fill Duck PFAS Free Hydrophobic Down, RDS
Fill Weight Regular: 1 lb 7 oz
Regular Wide: 2 lbs
Long: 1 lb 10 oz
Long Wide: 2 lb 4 oz
Shell Fabric 20D 100% Recycled Nylon Rip Stop
Lining Fabric 20D 100% Recycled Nylon Rip Stop
Manufacturer Warranty 2-Year Limited

 

Therm-A-Rest

Therm-A-Rest Boost Sleeping Bag

$319.95
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