The phrase identifies a garment, specifically a quarter-zip pullover, often associated with or branded in support of Donald Trump. This apparel item typically features a zipper that extends from the neckline to approximately a quarter of the way down the front of the garment. An example would be a navy blue quarter-zip sweater bearing a campaign logo.
Such merchandise serves as a visible symbol of political affiliation or endorsement. Its utility lies in its ability to communicate support for a particular individual or political movement. Historically, the use of clothing and accessories has been a common method for expressing political viewpoints and solidarity, dating back to various forms of political movements and campaigns throughout history.