Verified Buyer Reviewed by coloradochris from Colorado on Tuesday, October 18, 2016
5 nights in Glacier NP late September. Temps dropped to high 30s and low 40s. With long underwear on, I was plenty warm. I don't know that I would take this down to around freezing, but I think I just chill easier than a lot of people. Everything you would expect from a Marmot bag.