Sea to Summit Thermolite Reactor Extreme Liner


Sea to Summit Thermolite Reactor Extreme Liner

  • Description

The Thermolite® Reactor Extreme increases sleeping bag performance by up to 15°C with its super insulating 110g/m² Thermolite® fabric. Spacious design allows for a comfortable night’s sleep, even when the mercury plummets. Thermolite® is a fibre with a hollow core that provides extraordinary warmth for its weight while remaining extremely breathable. The Thermolite® Reactor Extreme adds warmth to a sleeping bag or, used alone, is ideal as a warm weather bag. With the stretchy knit fabric that moves with you and a draw cord hood, this liner is perfect for wrigglers and rollers or anyone who needs some extra warmth.


Adds warmth to a sleeping bag

Mummy shape with a box foot

Draw cord hood with mini cord lock

Machine washable

Packs into its own UltraSil® Cordura® stuff sack

110g/m² Thermolite® construction throughout

Colour: red