I am a professional skiing instructor and travel guide. At the beginning of this year, I took the group on a trip to Lake Baikal and decided to try the Elämän mask there. It is positioned as working up to -50 degrees. In winter, frost drops to -30 on Baikal, and the winds blow there with such force that all the snow is blown off the ice, making it perfectly smooth for ice skating. In such conditions, the face freezes very much and breathing is very uncomfortable. Using a mask with ski goggles solves these problems and allows you to fully enjoy skiing. So from the very beginning I was pleased with the purchase.