'47 Brand (or just '47) is a Boston-based sports lifestyle brand, founded in 1947 by twin brothers Arthur and Henry D'Angelo, known for creating authentic, stylish headwear and apparel by blending sports and fashion for major leagues (MLB, NFL, NBA, NHL) and collegiate teams, evolving from selling memorabilia outside Fenway Park into a global brand recognized for quality and cultural relevance, focusing on timeless designs like the classic 'Dad Hat'.