This is the Size Chart for products printed on the District Muscle Tank. Please note- the size chart reflects the size of your body, not the amount of material. This tank is designed so that there is less material around the chest. For some, this is why they love this tank so much. For others, they find that too much of their chest is exposed. If you wear a garment under this tank, there is a very good chance that must of the garment will be exposed in the area around the chest. This includes your new favorite sports bra, or a light-weight tank that you wear underneath this tank.