"a shaggy yellow ulster of ‘reach-me-down’ cut"
An illustration of an ulster overcoat (1903)
Public DomainAn illustration of an ulster overcoat (1903) - Credit: Men's Fashion from the Turn of the Century

An ulster was originally a Victorian working daytime overcoat with a cape and sleeves, made of hard-wearing fabrics, such as herringbones or tweeds. After the Edwardian period, it lost its cape, and continued to be used as a heavy-duty overcoat, often in a double-breasted style.

The phrase 'reach-me-down' is Edwardian slang for cheaply made or second-hand clothing.