Casual three-piece men’s suits typically consist of a jacket, trousers, and a vest. These suits are less formal than traditional business suits and are often made from lighter fabrics such as linen or cotton. They can be worn for semi-formal occasions, daytime events, or even in more relaxed office settings. The vest adds an extra layer of style and can be worn with or without the jacket depending on the occasion. Casual three-piece suits come in a variety of colors and patterns to suit different styles and preferences.