Business formal (also power dressing) applies to corporate environments, law firms, finance, and senior executive roles. Men: dark suit (navy, charcoal, black), pressed dress shirt, conservative tie. Women: tailored suit, blouse, or formal dress in neutral tones. Fabric priorities: wrinkle resistance, formality fit, and climate comfort. Wool, lyocell, and cupro perform best for year-round business formal across climates. Moisture regain above 10% (ISO 6741-1) reduces visible sweat in hot office environments.