A black double-breasted suit forms a broad overlapping front with smoother-looking lapel areas here. A white shirt, dark tie and straight pale pocket square supply smaller separate fields. Trousers remain dark, with reflective dark lace-up shoes completing the full view. One hand rests in the trouser area. No waistcoat is visible. The image therefore compares another front arrangement rather than supplying further evidence of an inner pattern field. Shiny lapels or shoes establish neither fibre composition nor a particular dress code or price for the outfit.
Compare that outer emphasis with a combination showing a contrast waistcoat inside an open jacket. Would you like a large continuous front or more transitions between shirt, waistcoat and jacket? Assess both actual options within the same occasion setting. Keep the neck accessory quiet initially so the large areas stay clear. Check the intended fastening and waist with naturally held arms and while sitting. If you then prefer the option without a visible waistcoat window, that is a clearly described shape decision. Another layer need not be added simply because other references include it.