Reactor - Thermolite Mummy Liner

€65.00 Sale Save

The THERMOLITE® Reactor liner is Sea to Summit’s top-selling and lightest thermal sleeping bag liner. It's an excellent cold-weather option for those who need additional warmth.


  • The THERMOLITE® fibres work like the hollow structure of a polar bear's fur, which traps extra insulating air
  • Added warmth: Up to 14°F / 8°C
  • Stretchy, Thermolite® fabric is incredibly comfortable
  • Lighter weight and more packable than fleece
  • Technical mummy-shape with drawstring hood
  • Keeps sleeping bag clean
  • Packs into its own Ultra-Sil stuff sack
  • Compressed Volume: 1L
  • Dimensions: 208 x 90 cm
  • Packed Size: 15 x 11 cm
  • Weight: 248 g
  • Materials: Thermolite polyester fabric
  • Easy care: machine wash with no special soap is needed. Avoid fabric softeners and dryer sheets