hey105714906-0wrote a review of Sea To Summit Thermolite Reactor Extreme Sleeping Bag Liner on January 6, 2018
Familiarity: I've put it through the wringer
Not only is this a good addition as a winter liner, it also makes a great summer sleeping bag. I live in Arizona and its nice to have a little something for the summer. It packs well and it is very comfortable. It makes a noticeable difference in the winter.