Exped Down Sock

The lack of a sole on these Down Socks means that while they don’t hike well, they’re perfect when paired with a sleeping bag on the edge of its abilities. On a windy 30° F night in Alaska’s Chugach State Park, the extra insulation on the bottom kept our tester’s feet toasty when 40 mph winds threatened to collapse his tent. They’re packable, too: The lightweight nylon face fabric and 700-fill down meant our tester could shove them into the stuff sack with his sleeping bag, keeping them close at hand for when he was forced inside. And an elastic cuff, rather than a cinch cord, kept them snug on our testers feet at night without cutting off his circulation. $69; 4.6 oz. (sz. M); S-L