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In-store/Curbside Pickup Available

In-store/Curbside Pickup Available

In-store/Curbside Pickup Available

Free shipping on orders over $100 • In-store pickup & curbside delivery available

Sea to Summit

Reactor Fleece Liner

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The THERMOLITE® Reactor™ Fleece liner is Sea to Summit’s warmest sleeping bag liner. Add one to your sleeping bag before heading into really cold environments  or, use as a 'stand alone' sleeping bag when the weather is warmer. The hollow core THERMOLITE® fibers have the same hollow structure as polar bear – when made into a fleece, this traps a lot of insulating air. Luxuriously soft, the Reactor Fleece is perfect as part of a cold weather sleep system – plus it will help keep your sleeping bag clean.

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