Sea to Summit Thermolite Reactor Extreme Liner

The THERMOLITE 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. The hollow core fibers of the THERMOLITE fabric work like a polar bear's fur and, along with the knitted structure, trap plenty of insulating air. Super soft and amazingly stretchy, the Reactor Extreme uses a heavier version of THERMOLITE to provide extra warmth for an incredibly comfortable night’s sleep. Use one to build your cooler-weather sleep system and to help keep your sleeping bag clean too.

Features:

Traps insulating air to increase warmth of a sleeping bag by up to 25°F / 15°C
Stretchy, Thermolite fabric is incredibly comfortable
110g/m² fabric is warmer than the 80g/m² Thermolite used in the standard Reactor
Technical mummy-shape with drawstring hood
Easy care – machine wash with no special soap needed. Avoid fabric softeners and dryer sheets
Keeps sleeping bag clean
Packs into its own Ultra-Sil stuff sack