Mother Oxford brand blouse, label size 2 which is a M/L. The essential button up Oxford shirt. This performance piece is designed to transition with your body and life. Made from stretch cotton that's spill-resistant (no more last minute changes!). And don't sweat it - it's breathable so you'll stay cool even if you're wearing all the hats. See online here: https://motheroxford.com/collections/shop/products/mother-oxford?variant=40045115080763