Polo Ralph Lauren has always upheld its all-American aesthetic, and a particular hallmark of this is shawl-neck cardigans that conjure an Ivy-League image. The brand revitalises this silhouette for the festive season in a patchwork of patterning; discover interchanging tartans, the classic cable-knit and a touch of snowflake intarsia knits for the ultimate winter layer – all drawn together by opulent gold-tone double-breasting. How to wear Harrods: Style with a rollneck sweater, chinos and loafers.