The Therm-a-Rest Altair HD Sleeping Bag is a winter down sleeping bag for settling into camp after snowshoeing the day away. Stuffed full of 750+ Hydrophobic Down insulation, it's more resilient to moisture (than untreated down) and the ThermaCapture™ lining increases warmth without adding much to the weight of the bag. The 2lbs, 7oz (regular length) bag has a EN Comfort rating of 23°F with a draft collar and tube that prevents cold air from sneaking into your bag late at night. The two SynergyLink™ Connectors allow you to strap the bag to your mattress, roll prevention at it's best. I just made 'roll prevention' up, but it's totally a thing, because rolling off your mattress mid-sleep is terrible.
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