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Sea to Summit Thermolite Reactor Extreme Mummy Bag Liner

    Sea to Summit Thermolite Reactor Extreme Mummy Bag Liner

    This Sea to Summit Reactor Extreme mummy bag liner adds a few degrees of warmth and extends the life of your sleeping bag. See details

    • $66.95
    4
    (24)

    Item # 797114

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    This Sea to Summit Reactor Extreme mummy bag liner adds a few degrees of warmth and extends the life of your sleeping bag.

    Product size and color

    This Sea to Summit Reactor Extreme mummy bag liner adds a few degrees of warmth and extends the life of your sleeping bag.

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    This Sea to Summit Reactor Extreme mummy bag liner adds a few degrees of warmth and extends the life of your sleeping bag.

    • Constructed of insulating Thermolite® fabric, a hollow-core, breathable fiber that provides extraordinary warmth for its weight
    • Adds up to 25°F of warmth to a sleeping bag; can also be used as a summer ultralight sleeping bag
    • Liner helps keep the inside of your bag clean, saving it from the wear and tear of washings
    • Drawcord hood with mini cordlock cinches around face to hold warmth in
    • Mummy shaped liner features a 3D footbox providing plenty of room for feet
    • Comes with a lightweight Ultra-Sil™ stuff sack

    Imported.

    Item 797114

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    Sea to Summit Thermolite Reactor Extreme Mummy Bag Liner Specs
    Specification
    Description
    Best use
    Backpacking
    Mummy
    Up to 25 degrees
    Up to 14 degrees
    3 x 5 inches
    Polyester
    84 x 36 inches
    14 ounces
    0.39 kilograms
    Sleeping bag shape
    Added warmth (F)
    Added warmth (C)
    Stuff sack size
    Material(s)
    Dimensions
    Weight
    Weight - metric

    Sea to Summit Thermolite Reactor Extreme Mummy Bag Liner

    Loading Ratings & Reviews...

    Sea to Summit Thermolite Reactor Extreme Mummy Bag Liner is rated 4.0833 out of 5 by 24.
    Rated 5 out of 5 by from Nice liner I bought this liner for winter solo backpacking to beef up my 15F Wenger Rhone 800-fill down bag. The bag is very warm for a 15F but I tend to be a very cold sleeper, so I need to have something that beefs up my temperature rating for nights below 20. I used it on a humid night that got down to about 15 or 10, and stayed very warm with only a thin base layer on. Without the liner I would have been cold. The improvement in temperature rating I would put at about 15 degrees, realistically. Be wary of people who say it does not work, especially if they do not know the limits of their sleeping bag well or are using insufficient ground insulation. For winter backpacking I use a R-5 big Agnes Q-Core with a closed-cell ThermaRest foam mattress underneath for added insulation. No sleeping bag will protect you from the cold ground. The liner is comfortable, easy to use, and packs up small. Also plenty long and roomy enough for me, I am 6'2" plus and 220 lbs. Overall very happy. Don't really expect the liner to convert your bag into a full-on winter bag, those have special face baffles and other jazz to keep you warmer, but on a budget it will keep you warm below your sleeping bag's temperature rating.
    Date published: 2014-04-13
    Rated 4 out of 5 by from Worked Well For Me I had couple of guys joining me on a November backpacking trip in the Presidential Mountains / White Mountains and only had 2 bags rated down to 10F, and 1 rated to 35F. I took the 35F bag and bought the Thermolite Reactor liner rather than buy a third sub 10F bag. We had cold rain and then freezing temps but the liner kept me quite warm, almost too warm. Their claim of up to 25F added warmth seems believable. I would have given it 5 stars but it was higher priced than I would have liked.
    Date published: 2014-04-13
    Rated 5 out of 5 by from Does exactly what it should I spent 3 days in Joshua Tree National Park in winter with a 40 degree bag and this liner. It got down to 12 degrees at night and, with some light baselayers, I slept extremely comfortably. It's great if you don't want to spend the extra money on another bag.
    Date published: 2014-04-13
    Rated 5 out of 5 by from Fantastic! I use this liner in a 0 degree Mountain Hardwear bag. It protects the bag and keeps it clean. The best part is the warmth. It is very comfortable and feels similar to silk. The draw cord sinches around your shoulders and keeps your body heat in. I prefer winter camping and love the snow. This liner is a great addition to any mummy bag if you are going to be in cold climates. If it gets wet, it dries quickly. Once it is stuffed into the sack that comes with the liner, I throw that into my sleeping bag and pack them together for convenience. It is very simple to wash once your make it home. I've recommended this to several friends!
    Date published: 2014-04-13
    Rated 4 out of 5 by from Good idea This liner definitely makes the nights a little more comfortable. I tried sleeping out in 40 degree weather with a 40 degree bag - I was pretty uncomfortable and cold at around 3 am. I put this liner in my bag & was noticeably warmer. I wouldn't say it adds 25 degrees, but I'm glad I have it & I'll use it with the bag I have rather than spending $300 on a new 20 degree bag.
    Date published: 2014-04-13
    Rated 5 out of 5 by from Great product... would buy again Used the Sea to Summit Reactor Extreme mummy bag liner on a recent fishing trip in the Allagash Wilderness Waterway in Northern Maine. We needed to pack light so purchased this liner to increase to warmth of my summer sleeping bag. On the third night of our trip the temp went down to an unexpected 36 degrees F. While the rest of the group shivered I stayed nice and warm. Light weight, easy to pack, feels good and keeps your sleeping bag clean. Great buy!
    Date published: 2014-04-09
    Rated 5 out of 5 by from Great temerature extender I use this along with a down quilt to sleep down into the low 40's. I use it with my mummy bag to go even colder. The material is soft and the bag has room for my feet to kick around. I really like this product and sometimes use only the liner in the summer.
    Date published: 2014-03-26
    Rated 5 out of 5 by from Most Wonderful Liner EVER! I purchased this liner because my NorthFace Mummy bag is rated at 20F and I get a little chilly when backpacking during the early spring and late fall months. This liner keeps me warm and comfortable all night long during the colder nights (it keeps my bag cleaner too). This liner is a little bulkier than the other Sea to Summit liners, but was still easy to pack and VERY lightweight. I highly recommend this liner, especially if you get cold easily, like me.
    Date published: 2014-04-05

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