Use an Airtrim respirator when it is cold outside. The air you breathe through the filter is heated and humidified by your breath and your windpipe is protected from the dry and cold air. Airtrim lets you effortlessly walk, exercise, and be outdoors for extended periods in winter. Highly recommended for and popular among cross-country skiers and high-altitude mountaineers.
Airtrim is suitable for people who are sensitive to cold air, practice sports in cold weather, work outside in wind and cold, work in the freezer and refrigeration industry, have asthma, COPD, or suffer from angina.
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The AirTrim mask is intended for anyone in a cold or dry environment. It can be used by all ages. AirTrim saves some of the heat and moisture from your own breath to warm and moisten the air inhaled. This will make it easier to breathe in cold/dry conditions and also help maintain core body temperature.
Do not forget to dress warmly for the rest of the body. It is easy to forget that it is cold when the air you breathe is hot!
Airtrim is a heat/moisture exchanger which recovers the heat and moisture from exhaled air. The filter heats the air you breathe in, protecting your air passages from the cold. Airtrim Standard comes packed with two different filters. The filter inside the mask is a sports filter, suitable for winter training.
During continuous use, the filter gets very damp, and you should clear it regularly by blowing vigorously through the mask. Avoid touching the wet filter as it tears easily. Allow the mask and filter to air dry.
Always bring along spare filters on long training sessions and mountain trips. Spare filters must be kept dry.
The racing filters were developed especially for sportspersons who drive themselves hard and don't need a great deal of warmth. They provide varying levels of heat recovery and have lower breathing resistance than the original filter.
The temperature of inhaled and exhaled air was measured on a subject wearing the Airtrim mask in ambient temperatures of -22°C and -10°C. The measurements were made approximately 1 cm inside and outside the filter. The tables below show the values for inhaled air.
Sports filter in the mask
| Ambient | -22°C | -10°C |
| Standing | +19°C | +26°C |
| Walking | +9°C | +24°C |
| Running | +10°C | +19°C |
The tests were carried out by the Ergonomics and Psychology Section of the National Institute for Working Life at Solna, Sweden.
The AirTrim mask can be used by people doing many different cold weather activities including:
- walking and standing
- cross-country skiing (fitness and racing)
- running/jogging
- bicycling (roads and trails)
- mountaineering, mountain climbing
- winter hiking/camping, sledging
- orienteering, snowshoeing
- industrial refrigeration work
- outdoor ice skating (pleasure and speed skating) - outdoor maintenance
Set including 1 racing filter + 1 sports filter
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