The warmest sleeping bag liner

The THERMOLITE® Reactor Fleece liner is Sea to Summit’s warmest sleeping bag liner. The regular Reactor Fleece Liner featuring a drawcord for adjustment and versatility is made from Thermolite® fabric and grid fleece for optimal heat retention. With the same features as our Reactor Liner, the fleece addition offers added warmth for maximum thermal boost.

• • Traps insulating air to increase warmth of a 1 season sleeping by up to 22% and 10% for a 3 season bag
    
  • Sustainable construction- 60% Thermolite® All-Season fabric, which is made with 100% textile waste and GRS Certified, and 40% polyester yarn
    
  • Treated with Heiq Fresh FFL biocide-free effective odour control
  • Technical mummy-shape with drawstring hood.
  • Available in 2 sizes- regular and compact
  • Easy care – machine wash with no special soap needed. Avoid fabric softeners and dryer sheets.
  • Ideal for use as a sleeping bag in warmer weather or sandy environments.
  • Packs into its own Ultra-Sil stuff sack

  BONUS: EASY TO WASH AND HELPS TO KEEP YOUR DOWN BAG CLEANER FOR LONGER