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Sea to Summit Reactor Thermolite Mummy Bag Liner


    Sea to Summit Reactor Thermolite Mummy Bag Liner

    Introducing the Reactor® Thermolite Mummy Liner—the first to use Thermolite® from Dupont. See details

    • $56.95

    Item # 705534

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    Introducing the Reactor® Thermolite Mummy Liner—the first to use Thermolite® from Dupont.

    Product size and color

    Introducing the Reactor® Thermolite Mummy Liner—the first to use Thermolite® from Dupont.

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    Introducing the Reactor® Thermolite Mummy Liner—the first to use Thermolite® from Dupont.

    • Thermolite is a hollow-core fiber that provides extraordinary warmth for its weight and remains extremely breathable
    • It's very comfortable, more compact and warmer for its weight than fleece liners
    • Adds up to 15°F degrees of warmth to a sleeping bag, or can be used on its own as the ideal warm-weather bag
    • Thin drawcord with tiny cord-lock around the hood
    • Very light and compact!


    Item 705534

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    Sea to Summit Reactor Thermolite Mummy Bag Liner Specs
    Best use
    Up to 15 degrees
    Up to 8.3 degrees
    3 x 5 inches
    82 x 35 inches
    8.1 ounces
    0.23 kilograms
    Sleeping bag shape
    Added warmth (F)
    Added warmth (C)
    Stuff sack size
    Weight - metric

    Sea to Summit Reactor Thermolite Mummy Bag Liner

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    Sea to Summit Reactor Thermolite Mummy Bag Lineris rated4.0out of5by23.
    Rated3out of5byfromSea to Summit Reactor Thermolite linerI find that sleeping bag liners, for the most part, don't work well for me. Using one would be effective in keeping a bag clean, but I'm confronted with the problem of getting tangled up and the awkwardness of getting in and out of my sleeping bag. However a liner, like the Sea to Summit Thermolite, can be a good addition to adding more warmth when needed without paying the price of a warmer sleeping bag. I think the increased warmth of 14 degrees on the light weight liner that I purchased maybe optimistic, but I felt it performed well enough in turning my 41-degree rated sleeping bag to closer to a 31-degree bag during an early October overnight wilderness trip where the night temperature pushed the limits of my sleeping bag. Liners are intended to be used on the inside of a bag. All though, for those who are bothered by the problem of getting tangled up and need the gain of a little additional warmth, try slipping it over the outside of your sleeping bag like a bivy sack.
    Date published: 2014-02-11
    Rated5out of5byfromGreat addition to mummy bag, plus.Great addition to a mummy bsg for cold weather conditions and offers versatility as a warm weather bag all by itself. Excellent light weight option.
    Date published: 2013-12-05
    Rated5out of5byfromGood tool for your bagThis is a basic liner that buys you an few extra degrees and makes it easier to keep your bag clean. Its easy to clean, easy to pack and not very heavy. I've taken this into backcountry west virginia in october and it was honestly the most comfortable I have ever slept, though I have a multi part sleep kit to assure that.
    Date published: 2013-10-24
    Rated4out of5byfromSolid, Glad I boughtI bought this as an insulator for my +15 sleeping bag. I wanted a lightweight cover for slightly cool nights when the sleeping bag is too much. I will be using this in the sleeping bag all winter long as I work in an outdoor wilderness education organization. So far so good, but the 10 and 20 degree weather not yet happened.
    Date published: 2013-09-26
    Rated4out of5byfromGreat purchase!I recently took a trip to Yellowstone and did some backcountry camping. The temperatures got down to the mid/low thirties overnight and I knew from previous (and uncomfortable) experience that my sleeping bag wouldn't keep me warm enough. I purchased this liner to supplement my sleeping bag and it totally worth the money. It's very thin and lightweight so I was concerned about its effectiveness, but I was incredibly comfortable and warm all night. The fabric is also very soft and cozy and added minimal weight to my pack.
    Date published: 2013-09-18
    Rated4out of5byfromgood, not great, addition to gearI liked this liner as an addition to my +20F sleeping bag, which I always get cold while using. I recently took this liner camping in Yellowstone and it definitely helped warm things up a little to the point where I was chilly, not cold. I am always cold-natured though. I also used just the liner by itself when camping in northern missouri and it worked great.
    Date published: 2013-09-05
    Rated5out of5byfromquality linerbought it for a backpacking trip around the Minarets in the Ansel Adams Wilderness. kept my sleeping bag clean. And it actually wasn't very cold so I slept in just the liner with my sleeping bag open. very very comfortable.
    Date published: 2013-08-14
    Rated4out of5byfromExtends bag lifeI bought this to extend the life of my down sleeping bag, which is about 20 years old. This is just what the doctor ordered. My 40-degree down bag was working more like a 60-degree down bag in my hammock sleep system. I've used this liner twice now and slept more comfortably than ever.
    Date published: 2013-08-09

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