Thermolite Reactor


Thermolite Reactor
Page Type Gear Review
Object Title Thermolite Reactor
Manufacturer Sea to Summit
Page By rasgoat
Page Type Jan 28, 2007 / Jan 28, 2007
Object ID 2324
Hits 6703

Product Description

This is a coolmax bag liner to increase the temperature of a sleeping bag up to 15 degrees (F)


The “Reactor” is made from the lightest weight Thermolite®, that DuPont has yet approved. Thermolite® is a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Adds up to 15 degrees of warmth to a sleeping bag or, used alone, is the ideal warm weather bag.

Lighter weight, more packable than fleece
Adds up to 15 degrees of warmth to a sleeping bag
Mummy shape with a box foot
Draw cord hood with mini cord lock
Color of liner is black
Weighs just 9 oz
Packs into its own 3” x 5” sil nylon stuff sack



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rasgoat - Jan 28, 2007 4:54 pm - Voted 5/5

Noticable difference
I like using this bag liner during all seasons. it does keep me warmer and I think it is more comfotable than sleeping with clothes on.
If the cinch strap is used, the liner usually stays put, but sometimes gets twisted around during a tossing and turning sleep.

I like it because it helps keep my bag clean and is easy to wash.

JanVanGenk - Jul 19, 2007 11:11 am - Voted 5/5

One of my favourites
Using this liner I get away with a lighter sleeping bag. It feels comfortable and adds warmth. It's neither bulky nor heavy. I have even bivouaced at 5400 m in a snow cave using only Reactor and an emergency blanket (and a sleeping mat). With all the clothes on this combination was enough to keep me cozy all night long.

Brian C - Dec 14, 2010 9:26 pm - Voted 5/5

Nice to have
This is a nice addition to carry as an emergency shelter along with a bivy bag. It also does add heat to a regular bag and is pretty comy.

Viewing: 1-3 of 3