Sea to Summit Reactor Extreme Sleeping Bag Liner

Weighs 386g
Code: OC1529
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Increases sleeping bag performance by up to 14°C (25°F) with super-insulating 110g/m² Thermolite fabric. Spacious design allows for a comfortable night’s sleep even when the mercury plummets.

Thermolite is a hollow core fibre that provides extraordinary warmth for its weight and remains extremely breathable. Adds warmth to a sleeping bag or used alone is the ideal warm weather bag.

With the stretchy knit fabric that moves with you and a drawcord hood the Thermolite Reactor Extreme liner is perfect for wrigglers and rollers or anyone who needs some extra warmth.  

The liner is made from Du Pont Thermalite fabric this is a hollow core fibre that provides maximum insulation for weight. If you want a liner to keep your bag clean then this must be a consideration as it offers an insulation upgrade at the same time.

Could be used on its own if camping in a warm climate.

  • Packs into its own Ultra-Sil Cordura Stuff sack
  • Adds warmth to a sleeping bag
  • Mummy shape with a box foot
  • Draw cord hood with mini cord lock
  • 110g/m² Thermolite construction throughout
  • Weighs 399g
  • Width at shoulders 90cm
  • Length 210cm.
Showing our 2 Sea to Summit Reactor Extreme Sleeping Bag Liner reviews with an average rating of Excellent. Would you like to write a review?
Review Summary - 5 out of 5 based on 2 ratings.
May 3, 2019 | HK
Super comfortable and warm liner

Used this liner for few nights now, on temperatures around 0°C. I'm a really "coldsleeper" and this liner definitely helped me to sleep nice and warm in my Fjällraven Abisko 3 season sleeping bag. + This liner is super comfortable + It definitely adds some warm to your sleeping system, especially if you use the hood although I'm not sure that it could add a warmth it stated on the label and it'll definitely not turn a bad sleeping bag to a good one. But it's still a new 'must have' item in my bag. Would i purchased it again? Definitely YES! A really good product.

Ultralight Outdoor Gear Limited
January 27, 2017 | Archie
Warm and comfy

Went hiking after christmas, and i used this with 3-season fjällräven sleeping bag. It was very warm, alltough it was only -7c at night.

Ultralight Outdoor Gear Limited