Sea to Summit Reactor Thermolite Liner
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Sea to Summit Reactor Thermolite Liner

Sea to Summit Reactor Thermolite Liner is rated 4.0 out of 5 by 27.
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3.9 Star Rating
3.9
$57.95

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Product Description Item No.   10046785

The Sea to Summit Reactor Thermolite Sleeping Bag Liner. Our best selling sleeping bag liner! The Reactor is made from 80 gram/m2 Thermolite the lightest weight Thermolite available. Thermolite is a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Adds up to 14° F of warmth to a sleeping bag or, used alone, is the ideal warm weather bag.

FEATURES of the Sea to Summit Reactor Thermolite Liner

  • Lighter weight, more packable than fleece
  • Adds up to 15° F / 8° C of warmth to a sleeping bag
  • Mummy shape with a box foot
  • Draw cord hood with mini cord lock

- + Product Specifications
Best Use: Camping, Travel, Backpacking
Weight: 9.3 oz
Dimensions: 72 x 36 in.
Width: 36 in.
Length: 72 in.
Product Technology: Sea to Summit THERMOLITE
THERMOLITE

THERMOLITE
THERMOLITE is a high loft synthetic insulation. It features hollow-core and solid core fibers, which combine to provide lightweight warmth that stands up to constant use. When placed inside the Air Sprung Cells of Sea to Summit sleeping pads, it prevents heat loss from your body to the ground.

Check Out All THERMOLITE Products >

Rated 5 out of 5 by from I purchased this item with a 15-degree sleeping bag in preparation for a trip to Mount Rainier. I have only used it once since purchasing on a 40-degree night. I was in short-sleeves so this felt good to pull up over my shoulders without having to go full-mummy in my sleeping bag. In other words, it adds some versatility that I appreciate. Especially worth it considering size and weight.
Date published: 2016-04-25
Rated 4 out of 5 by from perfect fit! We purchased a couple of these to line our hammocks for a backpacking trip in Hawaii and they were just the right layer! Excited to try them out in the sleeping bags in MN.
Date published: 2015-11-06
Rated 4 out of 5 by from Soft and noticeably warmer I really like the "feel" of this liner and its fabric. I wouldn't use it by itself, but combined with one of my cheaper/thinner sleeping bags it made it noticeably warmer which makes it worth the buy. I like being able to increase the useful range of my bag by taking along this compact item. Only "con" is that it is basically a "sock" and I'd rather that it have at least a partial zipper to one side to make it easier to get in/out of.
Date published: 2015-05-05
Rated 4 out of 5 by from Great Liner but has one con. Sea To Summit Reactor Thermolite Liner.,,1st, I have to say im a big fan of Sea to Summit brand, love their mattirals , technology and all.,,This little accessory is must in every long trip.,,if you are not sure that your sleeping bag is gonna hold the temp, this is for you.,,
Date published: 2014-07-27
Rated 3 out of 5 by from Great liner, but not as warm as stated Bought this to bump a 32 degree bag to a 20 and it barely adds 5-10 degrees to your bag. Would probably rather go for the Thermolite Reactor Plus if warmth is the factor. Ratings aside, it is a super comfortable and useful bag that goes everywhere with me when traveling. Great for hostels or just crashing on a friend's couch.
Date published: 2013-04-20
Rated 5 out of 5 by from Essential This is a great product. Slept in a 15 degree bag with this item in 25 degree weather. Kept me very warm and also allow me to move around easily in my mummy bag. It takes up very littel room and makes the bag much more confortable - feels like a very light weight flannel (versus a the nylon feel of the bag). HIghly recommneded.
Date published: 2013-02-13
Rated 3 out of 5 by from Good cover-up This liner is nice to travel with, because it keeps my sleeping bag cleaner and keeps me covered up when i just want my bag unzipped for warm weather. However, most mornings I wake up to find it in a bunch at my feet. Maybe I just sleep a little crazy? The other thing that bothers me is that the material is a tiny bit "snaggy" on my skin. I have dry, calloused hands and feet, which catch/snag on a lot of materials. This stuff isn't too snaggy, but its not great either. It feels nice on the rest of my body. I think it might not be worth the retail price. I found a used one for cheap so it works for me.
Date published: 2012-10-21
Rated 2 out of 5 by from Its just OK I have used this liner for more then three years with my 20 degree bad on many cold nights in the field. Im not sure about the whole 'thermolite" deal, it really doesnt add that much warmth. Its okay but there could be better/cheaper options out there depending on your needs. If your winter camping its probably not the bag for you. ,,,,Its not all bad though! Its keeps your bag clean, it is super lightweight, and the material feels nice! If nothing else its a comfort for me to have it and I wont sleep in my bag without it.
Date published: 2011-12-31
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