Man in a Sea to Summit Reactor Thermolite Sleep Liner with exposed shoulder, eyes closed, against a white background.
A rolled-up black Sea to Summit Reactor Thermolite Sleep Liner isolated on a white background.
Sea to Summit Reactor Thermolite Sleep Liner with red accents on a white background.
Packaging for a Sea to Summit Reactor Thermolite sleep liner, featuring an image of a man and product details, alongside the liner in a storage sack.
Man in a Sea to Summit Reactor Thermolite Sleep Liner with exposed shoulder, eyes closed, against a white background.
A rolled-up black Sea to Summit Reactor Thermolite Sleep Liner isolated on a white background.
Sea to Summit Reactor Thermolite Sleep Liner with red accents on a white background.
Packaging for a Sea to Summit Reactor Thermolite sleep liner, featuring an image of a man and product details, alongside the liner in a storage sack.

Sea to Summit Reactor Thermolite Sleep Liner

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  • $100.00
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The Reactor is made from 80g/m² Thermolite®—the lightest weight Thermolite® fabric available. Thermolite® is a hollow core fibre that provides amazing warmth for its weight and remains extremely breathable. The Reactor adds up to 8°C of warmth to a sleeping bag or can be used alone as a warm-weather bag. Sea to Summit's best selling sleeping bag liner!
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