USPS
Air Sack – USPS Definition
(Informal) A sack, often an overflow sack, containing few pieces of mail. Also called skin sack.
Air Sack
(Informal) A sack, often an overflow sack, containing few pieces of mail. Also called skin sack.
(Informal) A sack, often an overflow sack, containing few pieces of mail. Also called skin sack.
(Informal) A sack, often an overflow sack, containing few pieces of mail. Also called skin sack.