Sea to Summit Thermolite Extreme Sleeping Bag Liner


  • Adds up to 15°C to your sleeping bag
  • Super compact pack size – Save space in your backpack
  • Use alone or with sleeping bag for different climates
  • Stretchy soft fabric for freedom of movement
  • Hood with drawcord adjustment

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This compact Sea to Summit Extreme Thermolite Liner adds up to 15°C to the comfort rating of your sleeping bag (2-3 seasons), and only weighs 399g! The Thermolite Extreme also comes with a stuff sack for storage, packing down to just 15 x 11cm to save space inside your backpack. The liner can be used alone in hot climates or you can team it with a 1-2 season sleeping bag to enhance its performance and make it suitable for use in cooler climates. As the Thermolite Extreme is so versatile, it is a great sleeping solution for lightweight backpacking and for travellers visiting multiple climates with different climates. In addition to its thermal efficiency, this liner is also odour resistant and machine washable, making it easy to keep clean. The liner is made from stretchy fabric to allow greater freedom of movement…Ideal if you’re a restless sleeper!

Additional information

Weight 500 g