![Does anyone know what these oxygen-less masks are? Adrian Ballinger and Ueli both have the same one it looks like. Thank you! : r/Mountaineering Does anyone know what these oxygen-less masks are? Adrian Ballinger and Ueli both have the same one it looks like. Thank you! : r/Mountaineering](https://preview.redd.it/cm74d58plul61.jpg?width=640&crop=smart&auto=webp&s=05dd80ed1b9220f34bbafdccc18b9bb493105f47)
Does anyone know what these oxygen-less masks are? Adrian Ballinger and Ueli both have the same one it looks like. Thank you! : r/Mountaineering
David Göttler - This winter, I have started to use an #airtrim mask whenever I train in the cold. Until now I had always been quite badly affected whenever I worked out
![Airtrim | andningsfilter, värmeväxlare, sportfilter, racingfilter, astmafilter, airtrim, surahammar, vapro, vapro produktutveckling ab Airtrim | andningsfilter, värmeväxlare, sportfilter, racingfilter, astmafilter, airtrim, surahammar, vapro, vapro produktutveckling ab](https://www.airtrim.se/eng/images/emil.jpg)