Dean Peterson, 48, of Lacey, Wash., is asking members of the National Association of Letter Carriers meeting in Boston this week to approve a resolution allowing for a change in the group's uniform regulations, The Boston Globe reported Monday.
Peterson argues that kilts "are far more comfortable and suitable to male anatomy than trousers or shorts because they don't confine the legs or cramp male genitals the way that trousers or shorts do."
The 6-foot, 250-pound mail carrier joined the post office eight years ago after retiring from the Air Force.
The Globe says he has spent his family's $1,800 tax stimulus rebate to send letters about kilts to postal union branches in every state.
"Please open your hearts -- and inseams -- for an option in mail carrier comfort," Peterson wrote.
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