On our coldest excursions, we rely on the extra insulation the Dura 8R Sleeping Pad has to offer. Not only is this proficient pad rated for conditions down to negative forty degrees, but it's also lofted with 700-fill down to prove we can trust in its warmth. Exped's Comfort Cradle air chambers ensure we're securely situated in the center of our mat so we don't make contact with the icy ground.