

A triangular "exit hole" for the flatus to be expelled is cut from the back of the air-tight underwear, near the bottom. This "exit hole" is covered with a pocket made of ordinary porous fabric sewn over the "exit hole". This unique design forces all expelled gas (flatus) out through the "pocket". Inside the pocket is a high-functioning, replaceable filter. The ad says nothing about sound deadening.Caveat Emptor.
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