Amazon.com : Sea to Summit Reactor Insulated Sleeping Bag Liner, Extreme (83 x 35) : Sleeping Bag Liners : Sports & Outdoors
Sea to Summit Thermolite Reactor Extreme Hut Sleeping Bag/Inlett - Sleeping Bags - Camping - Outdoor - All
Watch before you buy - Sea To Summit Liners Thermolite Reactor Extreme Fleece - YouTube
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