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Sea to Summit Reactor Extreme Liner - Moosejaw
 
Boring Rules and Info About the Extra 20% off Clearance Styles thing:

  • This deal cannot be combined with other offers and cannot be applied to prior purchases.
  • You must enter code LEAFPILE for the code to work.
  • While supplies last.
  • Exclusions may apply.
  • Offer valid through October 2nd, 2022.
  • Sorry for being so mean about it.

Fun Rules and Info About the 20% Off One Full-Priced Climbing Item thing:

  • You must use code CLIMBALOT to take the 20% off one full-priced item.
  • The deal is only on in stock items.
  • Deal cannot be applied to prior purchases or with other promotions.
  • Load bearing climbing equipment, like a harness or carabiner, is final sale by law so if you don't like your climbing stuff just hang it on your wall to impress your friends - sorry for being so mean about it.
  • The code is only good through October 2nd, 2022.
  • Some exclusions apply.
  • Not all climbing brands are included.

Boring Rules and Info About the 25% Off the Best Climbing Gear deal:

  • Not all items are 25% off.
  • Does not apply to all climbing brands.
  • Cannot be applied to previous purchases.
  • Sale runs through October 2nd, 2022.
  • Sorry, our lawyer is super crabby today.

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Sea to Summit Reactor Extreme Liner
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Sea to Summit Reactor Extreme Liner

Sea to Summit Reactor Extreme Liner is rated 4.7 out of 5 by 27.
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4.7 Star Rating
4.7
$69.95
OR

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Product Description
Item No.   10099067

The Sea to Summit Reactor Extreme Thermolite Liner. Increases sleeping bag performance by up to 25° F (15° C) with super-insulating 110g/m2 Thermolite fabric. Spacious design allows for a comfortable night's sleep, even when the mercury plummets. Individual comfort varies based on conditions and from person to person.

FEATURES of the Sea to Summit Reactor Extreme Liner

  • Thermolite construction throughout
  • Mummy shape with a box foot
  • Draw cord hood with mini cord lock
  • Packs into its own Ultra-Sil stuff sack

Product Specifications
Best Use: Camping
Weight: 14 oz
Dimensions: 84 x 36 in.
Width: 36 in.
Length: 84 in.
Product Technology: Sea to Summit THERMOLITE
Disclaimer: We only ship this brand to US Addresses.
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 >

Product Reviews
Rated 5 out of 5 by from Warm and comfortable The Reactor Extreme liner is warm and comfortable. I am 6'1" tall and it fits well from head to toe. Another great quality product from Sea to Summit.
Date published: 2022-09-13
Rated 5 out of 5 by from Very light weight and comfy! Probably the best bag liner out there for the weight and additional temp rating. I’m excited to use this as my summer sleeping bag in AZ! Couldn’t beat the price at Moosejaw also you get the cash back for your purchase essentially making it even cheaper!!
Date published: 2022-07-18
Rated 5 out of 5 by from Great weight to warmth ratio! This product has an excellent warmth to weight ratio and fits comfortably in my sleeping bag. In addition to that, the material is comfortable and sleek and fits nicely into its compressed sack
Date published: 2022-01-20
Rated 4 out of 5 by from Nice light liner I bought this and took it on a camping/hunting trip to give me a litter extra warmth and keep my sleeping bag cleaner. It worked very well It is a little hard to climb into without zipper but your going for compact and light. Overall very please with the product but I think it helps it is sea to summit a very good company.
Date published: 2021-10-04
Rated 5 out of 5 by from Kept us warm! Bought these inserts to turn our 50 degree sleeping bag into a 30 degree bag. Worked perfect and they are so small and light. Keep us warm and didn’t need new sleeping bags.
Date published: 2021-06-26
Rated 5 out of 5 by from Push your bag/quilt! I really like spring and fall camping/backpacking and I’m not the kind of human who will buy several custom top quilts…. But I like the idea of one versatile bag. So my current load out is a 30F degree hammock gear quilt with a 4.4R pad. I’m a cold sleeper. This liner puts me in the comfy/cozy realm for those 20-30F degree nights. I just toss it in my foot box without a stuff sack, to save weight. Anyway, I think it’s worth the price of admission. Treat it as well as you do your expensive quilt and it’ll do it’s thing. My pack weight with this liner is 12 pounds. I don’t know if this really adds 25 degrees, but it definitely adds 15 comfortably. Thats pretty rad at the weight. Fair warning, I’m not gram-obsessive. I haven’t specked out bags/quilts to see if a new bag is cost/weight effective compared to my kit with this. BUT, this liner gives me the ability to chose weight v warmth. For a casual backpacker with limited funds, this might buy you a few more weeks of outdoor sleeping on either end of spring and fall.
Date published: 2021-06-20
Rated 5 out of 5 by from Ohhhhhh, so soft! The Reactor Extreme is more than a liner for your sleeping bag. It works fantastic as it’s own warm weather cocoon when a full-on sleeping bag really isn’t needed. It’s more stretchy than I imagined and is very comfortable and soft.
Date published: 2021-06-10
Rated 2 out of 5 by from Liner only ,not a heat source This liner is all it is ,there claim to 25 degrees or even 10 deg is false in IMO. there are many liners on the market that are way lower priced, that actually work as a heat retention liner for a quarter of your hard earned cash ,Actually I feel this claim of 25 degrees is exaggerated 10 degrees is stretching it Ill be sending it back, for me it could be used as a laundry bag .
Date published: 2021-03-08
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What is the packed size of this one? I notice for the others a packed size is listed but I didn't see one for this one...

Asked by: Sonya
Hello Sonya, This can fit into a stuff sack size of 6.5 x 4.5 in. Hopefully this helps!
Answered by: Barry B Benson
Date published: 2021-05-19

How does this compare to the fleece liner also from S2S? Most specifically, pack size and temperature. Thanks.

Asked by: Tony
Hey Tony, great question! The Reactor Extreme liner packs down to about the size of a solo cup and is rated for 25 degrees Fahrenheit. The Reactor Fleece on the other hand, packs down to the size of a standard Nalgene bottle, and is good down to 32 degrees Fahrenheit. I hope this helps!
Answered by: Marty Moose
Date published: 2022-03-18

will this fit me if im six foot four?

Asked by: CrusherCaeden
Great question! YES, this Liner will work for you. The length is 6'10" :)
Answered by: Foxxy Cleopatra
Date published: 2020-11-14
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Size Guide