Pint Glass Sleeve is a cardboard insulated sleeve designed specifically to fit a standard pint glass. The Pint Glass Sleeve was invented by Frank L. Mayer in 1997. Also known as Pint Sleeve, Pint Jacket pintsleeve.com While working with J.J. Taylor Distributing jjtaylor.com in Key West, FL. Mayer observed patrons wrapping napkins around pint glasses because of condensation on the pint glass. [1] [2]