on 11/22/2005
When it gets cold, breathing warm air helps considerably. A heat exchange facemask captures the energy and humidity when you exhale and returns the heat and moisture back to your body when you inhale. Your core body stays warm. Your hands and feet stay warm. Your face mask stays dry. Your lungs are protected from the cold.
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Anonymous said
on 11/22/2005 When it gets cold, breathing warm air helps considerably. A heat exchange facemask captures the energy and humidity when you exhale and returns the heat and moisture back to your body when you inhale. Your core body stays warm. Your hands and feet stay warm. Your face mask stays dry. Your lungs are protected from the cold.