Sea to Summit | Outdoor Gear To Equip & Inspire

Reactor Fleece Sleeping Bag Liner (Like New)

Reactor Fleece Sleeping Bag Liner (Like New) - Main image
$66.97 $109.99 In stock

The Reactor Fleece Liner built from hollow-core Thermolite® Pro fibres used in a grid-pattern to deliver our warmest sleeping bag liner and the core of any quality cold weather sleep system. You can regulate your temperature using the shoulder zippers and drawcord footbox, which also align perfectly with the Free Flow-Zip system of Sea to Summit sleeping bags. The versatile Reactor Fleece Liner delivers comfort across multiple seasons or can even be used as a stand-alone sleeping bag in warm weather. Additionally, the drawcord footbox offers plenty of ventilation and the versatility of walking around camp while still wearing your liner if needed.

Features

  • Thermal boost to retain heat and warmth, as the core of your sleep system the Reactor liner extends the performance of your sleeping bag and sleeping mat in the coldest of conditions
  • Hollow-core Thermolite® EcoMade fibres are used in a grid-pattern fleece for maximum warmth retention
  • Drawcord footbox can be opened or closed for optimal comfort and integrates perfectly with the footbox of our Free-Flow Zip system in select Sea to Summit sleeping bags
  • HeiQ Fresh odour control technology helps keep the liner fresh even after extended use
  • A mummy shape designed for maximum thermal efficiency and includes shoulder zippers and footbox drawcord for additional temperature regulation
  • Sea to Summit Guarantee is offered for the Lifetime of this product
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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Jacob ★★★★★

Took this on a shoulder-season trip where temps dipped near freezing, and the grid-pattern weave held warmth way better than my old basic liner. The hollow-core fibers feel surprisingly light for how much heat they trap, and the used condition was honestly flawless.

Riley ★★★★★

The grid pattern of the Thermolite Pro fibres actually traps heat noticeably better than my old flat liner, and it packs down small enough to stuff into the bottom of my bag without adding bulk. Woke up warm on a 40-degree night where I'd usually be shivering.

Evelyn M. ★★★★★

The grid-pattern weave actually makes a noticeable difference—I stayed toasty on a 30°F night without the bulk of a second bag. It packs down small enough to shove into the foot of my pack, and the hollow-core fibers feel genuinely warm against the skin.