A coatee, worn with a waistcoat or vest, remains part of formal Highland dress. The tight-fitting and short-skirted double-breasted coatee replaced the single-breasted coat, and the waistcoat was discontinued. Variation may be called an Argyll jacket or Prince Charlie jacket (or coatee). The Earl Marshal's coatee is also scarlet, with dark blue collar and cuffs. Performing duties in a hot climate while wearing a coatee caused troops to become fatigued. The coatee was fastened with practical buttons bearing the Crown onto button-holes.