Choose based on fabric quality, jacket style, warmth level, and the occasion. For a formal green wool jacket for men, look for a tailored or double-breasted cut in real wool such as Irish wool options from Senator Materials. For daily or semi-formal wear, consider mid-weight wool or wool-blend options that layer easily with shirts and sweaters. For casual settings, a lighter-weight green wool jacket or related coat with clean lines pairs well with denim or chinos. Brand cues like fashion and BerryKey can guide style, but verify fabric and care to ensure the piece fits your wardrobe.