The Nordica GPX 130 Ski Boots are all-new for 2015-16 and features an innovative cork liner. Cork is a natural insulator, keeping heat from escaping; it’s also very dense to ensure power transmission isn’t lost when this puppy is engaged amid high-octane descents. Nordica’s Power Driver 60 mm, a heavy-duty polyurethane strap, helps provide better unity between the upper cuff and liner for a boost in power transmission.