Designed tanks are made with Bella + Canvas tank tops -- soft, beautiful, and will easily become one of your favorites! You can find sizing information under the "Graphic Tank Tops" tab.
All other activewear and apparel is made by LA-based design team, Mono B. They are known for providing incredible apparel at affordable prices... not to mention, they are cute and fashion-forward! The size chart below is directly from their site. I feel as though they run true-to-size, but if you have an issue with your order, view the return policy.