Reactor Lightweight Liner

Whittaker Mountaineering Verified independent store

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The definitive thermal upgrade for unpredictable alpine sleep systems. The Sea to Summit Reactor Lightweight Liner provides a crucial thermal enhancement, effectively trapping and reflecting your body heat to keep you comfortable in frigid mountain conditions. Crafted with an incredibly stretchy, articulated fabric, it moves effortlessly with you to prevent that restrictive, claustrophobic feeling inside a technical mummy bag. Equipped with advanced, bio-based odor-control technology, it stays fresh on extended, multi-day missions while actively protecting your expensive down bag from dirt and grime. It is the absolute essential, highly packable sleep system enhancer for climbers and backpackers demanding ultimate adaptability in shifting alpine climates. Show more