2020 Rossignol Pure 70 HeatThe Rossignol Pure Heat Ski Boots are a version of the Pure 70 with a sweet, electronically heated liner that's completely built in. That's right, no aftermarket hassles with cables and duct tape, the Pure Heat's Therm ic system comes ready to use right out of the box (just be sure your batteries get charged first). This is Rossi's comfort focused 102mm last in a user friendly 70 flex, perfect for new and intermediate skiers who value all day comfort