Do your worst without disturbing those around you with these flatulence-filtering briefs. Featuring a built-in activated carbon lining, these underpants truly serve the greater good. They make a great gift for the uncouth and you may want to do everyone else a favor and get a pair for yourself. These briefs, manufactured by Shreddies in styles for women and men, feature the same technology as the related line of jeans and flatulence-filtering pajamas. Give a pair, get a pair, everyone wins.