If your sleeping system needs some extra warmth, then the Thermolite Reactor Liner from Sea to Summit will add up to 8°C and help keep your sleeping bag clean.
This liner is made from Thermolite hollow core fibres which traps heat and has excellent insulating properties while being lighter than fleece. Thermolite is also soft and super stretchy so it’s really comfortable. The design of this liner is optimised for warmth, as it has a mummy shape, footbox and a drawcord hood. It will add up to 8°C of warmth to a sleeping bag, or it can be used on its own as the ideal warm-weather bag. The Thermolite Reactor also comes with a stuff sack included, so you can store it away neatly when not in use.
Prolong the life of your sleeping bag, and add extra warmth with the Thermolite Reactor Liner from Sea to Summit.
Adds up to 8°C of warmth to a sleeping bag
Made of ultra-lightweight Thermolite fibre
Mummy shape with a box foot
More compact and warmer for its weight than fleece liners
Thin drawcord with tiny cord-lock around the hood
Packs into its own lightweight sack
Use inside a sleeping bag for extra warmth or as a stand-alone bag in warm weather
Max. User Height:
210L x 90W cm
17L x 11W x 11H cm
Hiking | Trekking
Use Liner without bag in summer1 answer
How good is this liner as a summer sleeping bag please ?
Malcolm - Griffith Dc, NSW (1 year ago)
This will depend on the overnight temperature, what you're sleeping on, and what you're sleeping in. I have personally used one of these in warmer climates on a self-inflating mat inside a tent before. Overnight temperatures were in the high 20s, and I didn't get cold. I do however recommend always carrying your sleeping bag, as this won't be able to fully replace a sleeping bag.
Leece - Snowys(1 year ago)
Hi, It's states that the colour is yellow. Just wanted to confirm whether the liner itself is black or yellow? Or is it referring to the stuff sack that is yellow?
Henry - Maroubra, NSW(2 years ago)
Great question and I'm sorry our info isn't 100% clear! The liner itself is black, as per the picture, and the stuff sack is yellow.
Lauren - Snowys(2 years ago)
how tapered is the long liner1 answer
I don't want to be too raestricted when I insert into the liner insert around my feet. Will I regret ordering the tapered liner ?
Bryan - Adelaide(6 years ago)
The Sea to Summit Thermolite Reactor Liner tapers about 10cm from the shoulders. The benefit of the liner is that the fabric is quite stretchy. While I can't speak for your opinion, common feedback is that the stretchy fabric makes the liner feel un-restrictive around the feet.
Ben - Snowys(6 years ago)
Reactor Extreme?1 answer
Hi there, do you sell the Reactor Extreme liner as well? Thank you.
CH - Sydney(8 years ago)
G'day CH - We sure do. For some reason we haven't uploaded it online yet, but I see it has the Snowys code of #38184, and we do have a couple in stock (as of when I post this). To order one, give us a bell on 1300 914 007. Cheers, Paul
Paul - Snowys(8 years ago)
It gets cold here, real cold.1 answer
Added to the roman mummy -5 deg sleeping bag, will it keep you warm and toasty in temps of around -8?
Ric - BUNDARRA, NSW(8 years ago)
Hi again Ric. There are so many variables here that it's hard to say for sure. Not knowing exactly which sleeping bag you have, it's likely that the -5 rating is the lower limit, so the comfort rating is probably around +1 or +2. Even with this liner, on a -8 degree night I think it would still be too cold. It depends a lot on the person - whether you are a hot or cold sleeper. A good insulated sleeping mat will help a lot, and of course a set of thermals. For me personally, I would be getting a warmer sleeping bag if I was expecting those temperatures while camping.
I hope this helps, please give us a call if you would like to discuss further. 1300 914 007.
Lisa - Snowys(8 years ago)
How do you wash it?1 answer
Is it drip dry. do you spin it out,?
Ric - BUNDARRA, NSW(8 years ago)
Hi Ric, this liner is machine washable and will be fine for a normal spin cycle, but not suitable for the dryer.