Posted by Dave (184.108.40.206) on June 21, 2000 at 13:29:15:
In Reply to: A subtle but important difference posted by Ted on June 21, 2000 at 12:53:22:
I think that's what I have. Looks like there is a kind of a flap valve on the side that opens when you exhale to allow the CO2 to escape.
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