Sea To Summit Reactor Thermolite 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. In warmer weather, it can be used a ‘stand alone’ sleeping bag. The hollow core fibres of the THERMOLITE® fabric work like hollow polar bear or caribou fur – along with the knitted structure, this traps 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 to keep your sleeping bag clean, too.

• Stretchy, Thermolite® fabric is incredibly comfortable
  
• 110g/m² fabric is warmer than the 80g/m² Thermolite® used in the standard Reactor
• Works like your favourite cold-weather base layer to trap insulating air and increase warmth
• Easy care – no special soap is needed
• Significantly improves the thermal performance of your sleeping bag
• Comfortable stretchy fabric
• Keeps sleeping bag clean
• Machine wash and air dry - Avoid fabric softeners & dryer sheets to maintain wicking performance
• Packs into its own Ultra-Sil™stuff sack
• Bonus: Easy to wash and helps to keep your sleeping bag cleaner for longer.
  

The Reactor Extreme is Perfect For...

• Backpackers whose sleep system will be used in colder climates
• Campers whose sleeping bags don't keep them warm a the advertised temperature
• Very warm-weather campers who don't need a full sleeping bag
• Campers or backpackers looking to extend the performance of a (perhaps order) sleeping bag into shoulder seasons

Other Liner Options

• Other sleeping bag liners available here.
  
• Performance-oriented, weight-focused end users may opt to use a Spark or Flame as a sleeping bag liner.

ADDED WARMTH: Up to 25°F / 15°C
BEST USE: Backpacking, Camping & Winter Camping
COMES WITH: Ultra-Sil stuff sack
MATERIAL(S): Thermolite polyester fabric
SHAPE: Mummy