The lightest thermal sleeping bag liner.

The THERMOLITE® Reactor liner is our top selling and lightest thermal sleeping bag liner. With a mummy shape and Thermolite® Pro fabric, the Reactor Liner uses new infrared technology paired with comfortable stretch fabric to offer extra warmth, versatility, and increased insulation. The drawcord offers added flexibility for premium comfort. Best suited to cold conditions.

• • Thermal Boost of 12% when used in a 1 season sleeping and 6% in a 3 season bag
    
  • Stretchy, Thermolite® Pro fabric is incredibly comfortable and utilises Infrared Technology to increase warmth without adding weight.
  • Lighter weight and more packable than fleece.
  • Technical mummy-shape and available with or without a drawstring in the hood hood
    
  • Easy care – machine wash with no special soap is needed. Avoid fabric softeners and dryer sheets.
  • HEIQ Fresh bio based treatment for added odour control
  • Keeps sleeping bag clean.
  • Packs into its own Ultra-Sil stuff sack.