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Sea To Summit Reactor Thermolite Mummy Bag Liner
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Sea To Summit Reactor Thermolite Mummy Bag Liner

Item # 705534

$54.95

Item qualifies for annual
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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 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!

Imported.

Item 705534

Sea To Summit Reactor Thermolite Mummy Bag Liner Specs

Specification

Description

Average weight8.1 ounces
Average weight - metric0.23 kilograms
MaterialPolyester
Dimensions82 x 35 inches
Stuff sack size3 x 5 inches
Sleeping bag shapeMummy

Sea To Summit Reactor Thermolite Mummy Bag Liner Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
Sea To Summit Reactor Thermolite Mummy Bag Liner
 
4.5

(based on 24 reviews)

96%

of respondents would recommend this to a friend.

Pros

  • Easy to pack (23)
  • Compact (22)
  • Lightweight (21)
  • Comfortable (15)
  • Durable (11)

Cons

    Best Uses

    • Backcountry camping (23)
    • Winter conditions (14)
    • Campgrounds (13)
    • Road trips (9)
    • Day trips (6)
    • Reviewer Profile:
    • Avid adventurer (16), Casual adventurer (7)
    • What Is Your Gear Style:
    • Minimalist (11), Comfort driven (6)

    Reviewed by 24 customers

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    Mar

    26

    2008

    (27 of 27 customers found this review helpful)

     
    5.0

    Great piece of gear

    By Neuey

    from Colorado Springs, CO

    About Me Avid Adventurer

    Site Member

    Pros

    • Comfortable
    • Compact
    • Durable
    • Easy to pack
    • Good venting
    • Lightweight

    Cons

      Best Uses

      • Backcountry Camping
      • Day Trips
      • Road Trips

      Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

      So I used this every night in Iraq for a year, whether sleeping on base or in the sand, and it never ripped. Since I got back (2 years ago!) I've been using the same liner, still no rips, tears, or anything like that, and that's with one full year's worth of wear and tear and washings plus 2 more years of part-time use.

      • What Is Your Gear Style:
      • Comfort Driven

      Bottom Line Yes, I would recommend this to a friend

      (27 of 27 customers found this review helpful)

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      Mar

      3

      2008

      (14 of 14 customers found this review helpful)

       
      4.0

      Great Liner, OK on its own

      By illegallydead

      from Golden/Boulder, CO

      About Me Avid Adventurer

      Site Member

      Pros

      • Comfortable
      • Compact
      • Easy to pack
      • Lightweight

      Cons

      • Not windproof at all

      Best Uses

      • Backcountry Camping
      • Winter Conditions

      Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

      This liner is very good. I have used it a few times in conjunction with a zero degree no-name bag that was stuffed for many months... Lets call it a 10-15 degree. Anyway, it helped it out wonderfully, keeping me very warm, and it fit well in the bag, too.

      This thing is freakin' tiny when packed, which is very convenient. I fit in it pretty well, which is saying something as I am 6'5".

      Additionally, I have used it multiple times by itself as an uber-light bag, and while it keeps me warm, the thin material is not wind-resistant at all, so the slight draft in my tent removes most of the warmth it collects. I am working on making a windproof shell for it, we'll see how that turns out. If so, it could be a summer bag that fits in a Nalgene!

      • What Is Your Gear Style:
      • Minimalist

      Bottom Line Yes, I would recommend this to a friend

      (14 of 14 customers found this review helpful)

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      Aug

      19

      2008

      (13 of 13 customers found this review helpful)

       
      5.0

      ABSOLUTELY EXELENT !!!

      By CoeManIngraham

      from Sunnyvale

      About Me Avid Adventurer

      Site Member

      Pros

      • Comfortable
      • Compact
      • Durable
      • Easy to pack
      • Good venting
      • Lightweight

      Cons

      • DIDDLY SQUAT

      Best Uses

      • Backcountry Camping
      • Campgrounds
      • River Trips
      • Road Trips
      • Survival
      • Winter Conditions

      Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

      OK so I got this "liner" bag as a sleeping bag when I took my good bag to cleaners and cause they messed up I was not able to get it back in time for my trip. As it was not going to be too cold I guessed that this along with my layers would suffice for the weather. I did not want to spend a grip getting another full-on bag (assuming I would eventually get mine back from the cleaners, but that is a different thing) so I decided to take a chance on this one.

      I AM so satisfied and happy I did. I don't think I will ever take a full bag on a summer trip again. This kept me warm and was light and even more importantly very compact. It performed well on the initial trip and a few others so far. I have used it in the wind and while it is not designed as a windshield with a slip on cover I made from a couple of trash bags I got a super-compact lightweight bag and groundcover all in one.
      This thing has held up great so far and after very close inspection I have found no defects after multiple uses, and I am a rough sleeper.

      • What Is Your Gear Style:
      • Minimalist

      Bottom Line Yes, I would recommend this to a friend

      (13 of 13 customers found this review helpful)

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      Feb

      7

      2008

      (13 of 14 customers found this review helpful)

       
      5.0

      Not what I anticipated

      By morningLori

      from CA

      About Me Casual/ Recreational

      Site Member

      Pros

      • Comfortable
      • Compact
      • Easy to pack
      • Lightweight

      Cons

        Best Uses

        • Backcountry Camping
        • Campgrounds
        • Winter Conditions

        Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

        I wasn't expecting something so thin - once I saw it I anticipated that it wouldn't be as warm as it was supposed to be. I tried it out first at home, with the heat turned down, under a comforter I knew would not be warm on its own - this liner kept me warm and toasty, didn't make me feel confined, in fact I hardly knew it was there. I'm guessing this will make up for my thirty degree bag not really being warm as advertised, and I'm glad I picked this up.

        • What Is Your Gear Style:
        • Comfort Driven

        Bottom Line Yes, I would recommend this to a friend

        (13 of 14 customers found this review helpful)

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        Oct

        11

        2007

        (11 of 11 customers found this review helpful)

         
        5.0

        Does the job

        By squirrel

        from Roseville, CA

        About Me Avid Adventurer

        Site Member

        Pros

        • Compact
        • Durable
        • Easy to pack
        • Good venting

        Cons

          Best Uses

          • Backcountry Camping
          • Campgrounds
          • Road Trips

          Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

          Extremly good warmth to weight ratio. Unlike most fleece liners fabric streches with you when you move around. Never used in in super cold weather, but works well, for me, in tempartures of 30 degrees and above. Packs down super small and is very light weight. Excellent choice for a liner.

          Bottom Line Yes, I would recommend this to a friend

          (11 of 11 customers found this review helpful)

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          Sep

          28

          2007

          (10 of 10 customers found this review helpful)

           
          5.0

          Warm and light

          By Oregon Trails

          from Oregon

          About Me Casual/ Recreational

          Site Member

          Pros

          • Durable
          • Easy to pack
          • Lightweight
          • Packs small

          Cons

            Best Uses

            • Backcountry Camping
            • Campgrounds
            • Day Trips
            • River Trips
            • Road Trips
            • Survival
            • Winter Conditions

            Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

            Really nice lightweight liner. Packs very small and adds considerable warmth for its weight. I pair this up with a lafuma 40 degree down bag and I use this combo for everything except snow camping. It did obsorb a little bit of camping smell, (campfire) but that just means its keeping the smell and smoke out of my sleeping bag. I would highly recommend this liner to anyone that uses an ultralight summer bag.

            Bottom Line Yes, I would recommend this to a friend

            (10 of 10 customers found this review helpful)

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            Sep

            12

            2007

            (9 of 9 customers found this review helpful)

             
            4.0

            Versitile Liner, good on it's own

            By xkursion

            from San Francisco

            About Me Avid Adventurer

            Site Member

            Pros

            • Compact
            • Durable
            • Easy to pack
            • Good venting
            • Lightweight

            Cons

            • No bag attachments

            Best Uses

            • Backcountry Camping
            • Campgrounds
            • Flights
            • Road Trips

            Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

            Purchased this liner to add a bit warmth to a new down bag, plus wanted to keep the bag clean. It's been a great addition to our Summer and Fall backcountry trips above 8,000' where it the temp drops off quite a bit at night. Thus far it has been versitile enough to add the extra warmth, but the stated amount of 15deg is a bit optimistic, but on warmer evenings (40-50deg) I found myself using just this liner and being very comfortable. The greatest bonus of this liner is that it is soft and very light for the amount of heat retention it has. It cleans up easy and doesn't retain much if any moisture. I've been impressed with this liner and just picked one up for my wife at the [...]. We also fly a lot and I see us taking this with us on the plane too.

            Bottom Line Yes, I would recommend this to a friend

            (9 of 9 customers found this review helpful)

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            Jan

            29

            2009

            (8 of 8 customers found this review helpful)

             
            5.0

            Good Piece

            By Tuts

            from Pembroke, MA

            About Me Avid Adventurer

            Pros

            • Comfortable
            • Compact
            • Easy to pack
            • Lightweight
            • Warm

            Cons

              Best Uses

              • Backcountry Camping
              • Backpacking
              • Campgrounds
              • Day Trips
              • Winter Conditions

              Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

              Great product. I used it in New Hampshire a few weekends ago (1/17/09) where it got to negative temps. I have the REI Kilo Flash 40 degree bag and had the thermolite liner. I was on a thermarest prolite 3 short sleeping pad with an emergency blanket below that. I was also bundled up in clothes and even though the temp got to -10, I was warm all night. This is a great piece and I was surprised at how much warmth it added. It is very lightweight and very small. If you are a backpacker like me, you need to get this.

              • Gift:
              • No
              • What Is Your Gear Style:
              • Minimalist

              Bottom Line Yes, I would recommend this to a friend

              (8 of 8 customers found this review helpful)

              Was this review helpful? Yes / No

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              Please let us know what kind of issue this is:

              Jan

              19

              2008

              (8 of 8 customers found this review helpful)

               
              5.0

              very nice

              By stumps211

              from Belton, TX

              About Me Casual/ Recreational

              Pros

              • Comfortable
              • Compact
              • Easy to pack
              • Lightweight

              Cons

                Best Uses

                • Backcountry Camping
                • Campgrounds
                • Day Trips

                Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

                Very small, lightweight, and super easy to pack. It's pretty thin and I'm often afraid I'm going to rip it while I sleep because I move around so much, but it has yet to. Adds a good deal of warmth to a sleeping bag. I found it helps to secure the hood cinch around my chest at night to keep it from getting tangled around my legs. Worth it I suppose.

                • What Is Your Gear Style:
                • Minimalist

                Bottom Line Yes, I would recommend this to a friend

                (8 of 8 customers found this review helpful)

                Was this review helpful? Yes / No

                 - You may also flag this review

                Please let us know what kind of issue this is:

                Sep

                15

                2007

                (7 of 7 customers found this review helpful)

                 
                4.0

                This is the liner to get

                By Tex

                from Houston, TX

                About Me Weekend Warrior

                Pros

                • Compact
                • Easy to pack

                Cons

                  Best Uses

                  • Backcountry Camping
                  • Winter Conditions

                  Comments about Sea To Summit Reactor Thermolite Mummy Bag Liner:

                  It's small, light, and warm. Easy to wash and doesn't show signs of wear for it. I use it alone sometimes and it makes it so I don't have to go buy a heavy sleeping bag for places that actually get cold. I don't find myself sweating or feeling uncomfortable using it and I haven't noticed it holding smells.

                  Bottom Line Yes, I would recommend this to a friend

                  (7 of 7 customers found this review helpful)

                  Was this review helpful? Yes / No

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                  Please let us know what kind of issue this is:

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