Whether we're post-holing our way through deep snow in quiet winter forests or clearing off the driveway mid-storm, the Korkers Polar Vortex 1200 Boot keeps our feet dry and warm in the coldest conditions. With a comfort rating of -60 degrees, the boots are built for winter storms, packed with 3M Thinsulate insulation and an Aerogel Frost footbed that traps warmth in downright icy weather. The waterproof leather construction is incredibly tough, with an additional waterproof bootie that keeps us comfortable while we trudge through wet, heavy snow. The Boa(R) M4 Fit System allows us to get the boots on and off easily while locking in a perfect fit, and the interchangeable Omnitrax outsoles allow us to match our tread to meet the unique conditions of every adventure.