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Thermarest

Thermarest Boost 650 20F/-6C Sleeping Bag | Extra Wide - 3 Lengths

Thermarest Boost 650 20F/-6C Sleeping Bag | Extra Wide - 3 Lengths

  • High Quality Materials
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  • Free delivery over £50

Regular price £297.00 GBP
Regular price £330.00 GBP Sale price £297.00 GBP
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Ultra-comfy warmer weather backpacking sleeping bag with adjustable shape and warmth.
  • 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 length—Short, Regular, Long—is also available in a Wide width, 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.
  • What's Included:

✓ Compression Sack

✓ Storage Sack

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Tech Specs

Regular Wide Short Wide Long Wide
Weight (Metric) 1.52 kg 1.27 kg 1.74 kg
Length (Metric) 203 cm 188 cm 216 cm
Fits (Metric) 183 cm 168 cm 198 cm
Girth Shoulder (Metric) 193 cm 191 cm 196 cm
Girth Hip (Metric) 188 cm 185 cm 191 cm
Girth Foot box (Metric) 155 cm 155 cm 155 cm
Packed dimension (Metric) 34cm x 19cm 25cm x 17cm 37cm x 19cm
EN Comfort (C) 0 C 0 C 0 C
EN Limit (C) -6 C -6 C -6 C
EN Extreme (C) -23 C -23 C -23 C
Fill material 650 Fill Duck PFAS Free Hydrophobic Down, RDS 650 Fill Duck PFAS Free Hydrophobic Down, RDS 650 Fill Duck PFAS Free Hydrophobic Down, RDS
Fill weight (Metric) 0.91 kg 0.77 kg 1.03 kg
Shell fabric 20D 100% Recycled Nylon Rip Stop 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 20D 100% Recycled Nylon Rip Stop
Zipper side Left Left Left

Specifications

Usage information

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