The little liner that does a lot. The Reactor Extreme Liner adds serious warmth on cold nights (up to 15°C / 59°F extra), keeps your sleeping bag cleaner for longer, and even works solo when temps are mild. Lightweight, packable, and soft as anything. Because being prepared shouldn't weigh you down. Learn more about the importance a liner makes to your sleep system via 🔗 LINK | Sea to Summit
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