Our 'Layering Tees' are the perfect comfortable tops for any season! These are made with a breathable fabric that can still be used for hot summer nights as well as a layering piece for winter. Runstrue to size. We do recommend that if customers purchase our layering tee for under-layering, that they do purchase their normal size. If being used as a top with no layering, for a loose modest look purchase one size up.