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Sea to Summit Stretch Knit Expander Mummy Liner


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The Sea to Summit Stretch Knit Expander Mummy Liner is a sleeping bag liner made from a premium super stretch knit polycotton.  

Warmer than a standard cotton weave liner, the Sea to Summit Stretch Knit Expander Mummy Liner's stretch properties allow it to move with you as you sleep, vastly increasing comfort and minimising tangles. The mummy shape is tapered for additional warmth and the anti-microbial treatment keeps bacteria at bay, as well as prolonging the life of your liner and sleeping bag. The anti-microbial treatment won’t wash out of the liner, and does not use nano-sized particles. The treatment is approved for use by the EPA (USA) and is used in many hospitals.


  • Hood & Box Foot
  • Premium stretch knit fabric that can expand twice its width
  • Luxuriously comfortable
  • Extends life of sleeping bags by keeping them clean
  • Anti-microbial protection, keeps your liner fresh, hygienic and odour free
  • Easy care, machine washable
  • Stuff sack


  • Length/Width: 210 x 92cm
  • Suitability: Cool Weather
  • Colour: Pacific Blue
  • Weight: 310g

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