noun
red and white sash
General term for a sash or obi that is red and white, often used in ceremonial or festive contexts.
お祝いの席で紅白帯を締めていた。
They wore a red and white sash at the celebration.
noun
red and white belt
Specifically in martial arts, a belt awarded to high-ranking practitioners, often indicating a master level.
彼は柔道で紅白帯を取得した。
He earned a red and white belt in judo.