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Sea to Summit

Thermolite Reactor Extreme Liner

From $64.90
5.0 2
Free delivery to most of Australia!
Same day dispatch
Easy 60 day returns

The ultimate solution to extending the warmth of your sleeping bag, the Sea To Summit Thermolite Extreme Reactor Liner increases comfort without adding excessive weight and bulk to your adventure kit.

Made with 110g/m2 Thermolite® fabric, the Thermoilite Extreme has a spacious design and stretchy fabric to cater for tall and restless sleepers and a drawcord hood to really trap the warmth when the mercury goes south.

THe liner also increases the life of your sleeping bag as they are much easier to throw in the washing machine than your expensive technical sleeping bag.

  • Mummy shape with box foot
  • Adds up to 15°C of warmth to a sleeping bag
  • Drawcord hood Stretch fabric
  • Machine washable
  • Includes stuff sack
Snowys Code:
Supplier Code:
Max. User Height:
235 cm
Internal Girth:
180 cm
External Dimensions:
210L x 90W cm
Packed Dimensions:
17L x 11W x 11H cm
110g/m2 ThermoliteĀ®
0.399 Kg
Suggested Use:
Hiking | Trekking
Limited Lifetime
5.0 2
5 stars
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1 star
May 30 2017

So worth the money

When I first got this in the post I was highly sceptical as it was so thin I thought it would never do the trick and I would spend the night freezing. Having recently tried it out in temperatures around 4 degree mark it was perfect for winter. I stayed toasty warm the whole night long didn't wake once from the cold. Definitely recommend to anyone who feels the cold easily.

- 2031
Mar 21 2017

Awesome product

Recently tested this liner on a 3 day trek in Tasmania's south west doing the Mt Anne circuit and it was great it kept me toasty all night. Keen to test it in some proper cold conditions over the cooler months.
Great service yet again Snowys šŸ‘

- Hobart

Difference in length of liner1 answer

What is the difference in length between the regular and long sizes?

- Narromine(1 month ago)

G'day Vanessa, 

That's a good question, sorry we haven't made it clear on the website (I'll get that updated). The long is 235cm and the regular is 210cm so that's a difference of 25cm.

- Snowys(1 month ago)

Sizes of Reactor Extreme Sleeping Bag Liners1 answer

Are the dimensions given for these liners in the stretched or unstretched state. I ask as I am 190cm tall and usually get the long version of products like this. It seems strange that the regular size fits people up to 210cm.

- Cairns(7 months ago)

G'day Ian,Ā 

I've just double checked for you on the packaging of this product, and this liner is definitely 210cm long. It also says that this liner is made to be 'spacious' so that may explain why it is larger than usual.Ā 

- Snowys(7 months ago)

Delivery to

Pick up from Snowys

92 Richmond Rd, Keswick SA

Opening hours:
Mon - Fri: 9am - 5.30pm
Saturday: 9am - 5pm
Sunday: 12pm - 5pm
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