The Thermolite® Reactor Extreme Liner increases sleeping bag performance by up to 15 degrees Celsius, thanks to its super insulating Thermolite® fabric. 
Thermolite® is a fibre with a hollow core, which provides superior warmth and breathability. The liner has been crafted with a stretchy knit fabric and features a spacious, mummy shaped design with box foot to allow increased movement - ideal for anyone who likes to wriggle or roll in their sleep. 
A draw cord hood has also been added for increased warmth. The Thermolite® Reactor Extreme Liner is machine washable for use season after season and packs down into its own stuff sack for easy transportation and storage.
 
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
 
Weight (g)
300