Available from Avalung

This is a very un-seasonal product, but it's too cool (pun intended) to wait. In the event you get trapped in an avalanche, breathing and exhaling from this strap-on contraption helps avert creating a potentially-threatening air pocket of CO2. It pulls O2 from below chest level and dumps your exhales at waist level. The apparatus also comes integrated into a backpack. File under: tools you hope you never have to test.

Source: Cool Tools