Amazon.com: Sea to Summit Reactor Insulated Sleeping Bag Liner, Extreme (83 x 35) : Sea to Summit
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 – Barneys Sports Chalet