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SEA TO SUMMIT Thermolite Reactor Extreme Liner

Item: 3909505 Product Description >

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  • SEA TO SUMMIT Thermolite Reactor Extreme Liner

    The lightweight Sea to Summit Reactor Extreme liner adds up to 25°F of warmth to a sleeping bag. Or, it can be used alone for warmer conditions.

    Features/Benefits:

    • Made from Thermolite, a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable
    • Adds up to 25° of warmth to a sleeping bag
    • Contrasting color along the top edge makes it easier to find the opening
    • Lighter weight and more packable than fleece
    • Mummy shape with a box foot
    • Drawcord hood with mini cord lock
    • Packs into its own Ultra-Sil stuff sack

    Fiber Content: Thermolite

  • SEA TO SUMMIT Thermolite Reactor Extreme Liner

    Stuff Sack Yes
    Shape Mummy
    Width 36 in. (90 cm)
    Weight 14 oz. (399 g)

REVIEW SNAPSHOT®

by PowerReviews
SEA TO SUMMIT Thermolite Reactor Extreme Liner
 
4.8

(based on 8 reviews)

100%

of respondents would recommend this to a friend.

Pros

  • Compact (4)
  • Lightweight (4)
  • Warm (3)

Cons

    Best Uses

      Reviewed by 8 customers

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      Displaying reviews 1-8

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      (3 of 3 customers found this review helpful)

       
      5.0

      a lot of bang for the buck

      By Indiana Jones in Dress

      from Pittsburgh, PA

      Pros

      • Light Weight
      • Small
      • very warm

      Cons

      • none

      Best Uses

      • Back packing
      • Camping
      • Emergancy blanket
      • Servival blanket

      Comments about SEA TO SUMMIT Thermolite Reactor Extreme Liner:

      Im 5'2 so I had plenty of lenghth and room.. I would guess a 6' - 6'2 man would still find plenty of room, it does streach.. the fabric was soft and comfortable but, very sheer and light... I was very impressed w/ how increadably warm it was! I normally sleep in down mummy bag during fall camping trips but, I used my light weight mummy bag w/ extream thrmolight for a resent 3 day backpacking trip to cut down on volume and weight.. I was so warm that I slept w/ my bag open both night... this is amazing product for someone that has cold weather issues... I have Raynauds sysdrom in my hand and feet my body chills very quickly.... I WISH THEY MADE GLOVES :)

      (3 of 3 customers found this review helpful)

       
      5.0

      great addition to keep warm

      By BGD

      from Lancaster PA

      Verified Reviewer

      Pros

      • Comfortable
      • Lightweight
      • Warm

      Cons

        Best Uses

          Comments about SEA TO SUMMIT Thermolite Reactor Extreme Liner:

          Recently purchased the Thermolite Reactor Extreme before spending a few very cold nights while hiking in the Dolly Sods Wilderness of WV. Temperatures dropped well below freezing (late Oct/early Nov). I carry a lightweight 30 degree bag and with the insert I was warm and comfortable. Performed as advertised! Lightweight, packs small, and will use it a lot!

          (1 of 1 customers found this review helpful)

           
          5.0

          Life saver

          By Dunedain

          from Rochester, NY

          Pros

          • Compact
          • Light
          • Warm

          Cons

          • Pricey

          Best Uses

          • Enhancing Current Gear

          Comments about SEA TO SUMMIT Thermolite Reactor Extreme Liner:

          We used ours to supplement our military surplus sleeping bags with gore tex bivy covers. We slept in the lean to at Indian Pass in -4F . The liners kept us toasty without adding weight or bulk to the bags . Easy wash when we got home too. These would be a great supplement to those reflective emergency bivy bags. Small and light enough to toss in day pack.

          • Was this a gift?:
          • No

          (1 of 1 customers found this review helpful)

           
          5.0

          worth its weight in gold

          By hiker

          from West Park,NY

          Pros

          • Comfortable
          • Lightwieight

          Cons

            Best Uses

            • Backpacking

            Comments about SEA TO SUMMIT Thermolite Reactor Extreme Liner:

            I used this with my 0 degree Marmot down bag. It was -7 plus the wind chill on Giant Mt. in the Adirondacks. I was acutally warm and had to unzip my bag slightly.

            Service and delivery comments:

            Arrived sooner than expected

            (1 of 1 customers found this review helpful)

             
            5.0

            Great fix for a beat bag

            By Nature's Wilde Photgraphy

            from Syracuse, NY

            Verified Reviewer

            Pros

            • BREATHES WELL
            • Compact
            • Holds the heat
            • Reasonable weight
            • Summers also

            Cons

              Best Uses

              • Hot summer camping
              • Winter Camping

              Comments about SEA TO SUMMIT Thermolite Reactor Extreme Liner:

              I have only used product in a cold condition, but feel after using it that it is so sheer and lightweight that it seems perfect for summer as a "light" bag.

              I used product in a chilly 30 deg. F enviro with a cheap 40 deg. F bag. We had a stiff breeze and I would have truly froze if not for the use of this product. By fully enclosing myself in it and closing down exterior bag, I was able to resist wind penetration and survive the night in relative comfort and warm feet! I would have to say that claims of adding another 10-15 deg. F seem very true.

              It is a simple addition when questions arise to a bag being a low enough cold rating on a trip. Weighs around a pound or so- but better than carrying a bigger bag instead.

              (1 of 1 customers found this review helpful)

               
              5.0

              Definitely adds warmth

              By Ken

              from Upstate, New York

              Verified Reviewer

              Pros

              • Compact
              • Light
              • Warm

              Cons

                Best Uses

                  Comments about SEA TO SUMMIT Thermolite Reactor Extreme Liner:

                  I used this liner with The North Face Cat's Meow sleeping bag in below freezing weather (probably somewhere around 25-30 degrees). I was warm all night until my girlfriend woke up in the middle night complaining she was cold. I let her use the liner with her sleeping bag and she felt great. I remained warm in my bag but not as warm as I was with this liner.

                  This size was perfect for me (5'10'') with room to spare. It is light and compacts really well with the bag it comes with.

                   
                  4.0

                  Thermolite Reastor Extreme

                  By Rick James

                  from Idaho Falls, Idaho

                  Verified Reviewer

                  Pros

                  • Compact
                  • Lightweight
                  • Soft
                  • Thin

                  Cons

                    Best Uses

                    • Camping

                    Comments about SEA TO SUMMIT Thermolite Reactor Extreme Liner:

                    I have a Sea to Summit Spark SP1, I use this as a way to get a couple more weeks of use before I have to switch bags. I really like this liner, it does add heat but it is the same thickness as the other liners, which makes me a little skeptical about 25 degrees . I have used it to keep me warm in 28 degrees though, so that is 15 degrees under the limit.

                    • Was this a gift?:
                    • No

                    (0 of 5 customers found this review helpful)

                     
                    4.0

                    Appalachain Trail supplies

                    By Zee the Fundraiser

                    from Hudson Massachusetts

                    Verified Reviewer

                    Pros

                      Cons

                        Best Uses

                          Comments about SEA TO SUMMIT Thermolite Reactor Extreme Liner:

                          I bought this as a gift along with a sleeping bag for a volunteer who will be hiking the appalachian trail to raise money for our organization(Andrew's Helpful Hands). He will be arriving in Georgia tomorrow to start his amazing journey.

                          • Was this a gift?:
                          • Yes

                          Displaying reviews 1-8

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