• 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.

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

• The Reactor Fleece Liner will add even more warmth to your sleeping bag.
• Performance-oriented, weight-focused end users may opt to use a Spark or Flame as a sleeping bag liner.