Used the wedgie on a Hahns Peak bag while winter camping in Alaska. Coldest temperature tested was -5F OAT. I am 250# and 6'. This made a tight fiting bag comfortable. I could tell that my face got chilled first when I woke up in middle of night while I was pleasantly surprised my body remained warm. Used in conjunction with a two track 2" pad, which made the bag a tighter fit before buying the we
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