Camo Mask with thermal exchange module. Born to breathe warm. Breathing cold air cools the body. The Exchanger Mask lets you breathe warm to help you stay warm. Stop breathing cold. Humans are born with the necessity to breathe warm air regardless of temperature outside. Keeping our body core protected from the invasion of cold air is key to cold weather comfort and safety. The heat exchange module inside each Exchanger Mask allows for the capture of heat from each exhaled breath and the retu