![Amazon.com : Reactor Extreme Liner (adds up to 25°F) Regular / Mummy : Sleeping Bag Accessories : Sports & Outdoors Amazon.com : Reactor Extreme Liner (adds up to 25°F) Regular / Mummy : Sleeping Bag Accessories : Sports & Outdoors](https://m.media-amazon.com/images/I/619t10nFvpL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : Reactor Extreme Liner (adds up to 25°F) Regular / Mummy : Sleeping Bag Accessories : Sports & Outdoors
![test night, purchased the sea to summit thermolite extreme liner. supposed to get to -19C(-31C w/ wind). also will be testing a new merino top that I purchased to see how toasty test night, purchased the sea to summit thermolite extreme liner. supposed to get to -19C(-31C w/ wind). also will be testing a new merino top that I purchased to see how toasty](https://i.redd.it/28ogra61nja81.jpg)
test night, purchased the sea to summit thermolite extreme liner. supposed to get to -19C(-31C w/ wind). also will be testing a new merino top that I purchased to see how toasty
![Sea To Summit Thermolite Reactor Extreme Liner Review & Demonstration | Warm Sleeping Bag Liner - YouTube Sea To Summit Thermolite Reactor Extreme Liner Review & Demonstration | Warm Sleeping Bag Liner - YouTube](https://i.ytimg.com/vi/dHU87bBiL74/mqdefault.jpg)