The Scottish Beret is a traditional hat that is typically made of wool and has a flat, round shape. It is usually worn as part of a traditional Scottish outfit and is often seen in Highland dress. The term 'TAM' is an acronym for the TAM o' Shanter, which is a type of Scottish Beret. The TAM o' Shanter is a traditional Scottish cap that is usually made of wool and has a flat, round shape with a pom-pom on top.