Rational Self Interest T-Shirt

The Rational Self Interest shirt is inspired by the philosophical idea that individuals act to serve their own interests — a concept central to debates around ethics, economics, and human behavior. This graphic tee turns that principle into something more visible. This graphic tee is perfect for: • Philosophy lovers and critical thinkers • Fans of ethics, economics, and human behavior debates • People who enjoy dark, intellectual humor • Those drawn to idea-driven, minimal designs • Anyone who prefers subtle but provocative statements Shirt Details • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz/yd² (142 g/m²) • Soft, lightweight fabric • Pre-shrunk for consistent fit • Side-seamed construction • Shoulder-to-shoulder taping • Blank garments sourced from Nicaragua, Mexico, Honduras, or the United States Disclaimer: The fabric is slightly sheer and may appear see-through, especially in lighter colors or under certain lighting conditions. Sustainable Production Each shirt is made to order, reducing waste and overproduction. Thank you for supporting thoughtful manufacturing. Size guide   LENGTH (inches) WIDTH (inches) CHEST (inches) XS 27 16 ½ 31-34 S 28 18 34-37 M 29 20 38-41 L 30 22 42-45 XL 31 24 46-49 2XL 32 26 50-53 3XL 33 28 54-57 4XL 34 30 58-61 5XL 35 31 62-65   LENGTH (cm) WIDTH (cm) CHEST (cm) XS 68.6 42 78.7-86.4 S 71.1 45.7 86.4-94 M 73.7 50.8 96.5-104.1 L 76.2 55.9 106.7-114.3 XL 78.7 61 116.8-124.5 2XL 81.3 66 127-134.6 3XL 83.8 71.1 137.2-144.8 4XL 86.4 76.2 147.3-155 5XL 89 78.7 157.5-165