Reactor Extreme Liner (Thermal Boost)

Description

The THERMOLITE®Pro Reactor Extreme liner is Sea to Summit’s warmest knitted sleeping bag liner. If your adventures take you to colder climates, the Reactor Extreme will add plenty of warmth to a sleeping bag. Plus in warmer weather, it can be used as a ‘stand alone’ sleeping bag. With a mummy shape and Thermolite® Pro fabric, the Reactor Extreme Liner featuring a drawcord uses new infrared technology, which reflects the body’s infrared heat back to you, paired with comfortable stretch fabric to add warmth, versatility, and increased insulation. The Reactor Extreme feature offers additional heat retention best suited to cold conditions.