Vintage Polo Shirt with Pocket

Adorable vintage polo with 3 snap closure and kangaroo pocket. Teal/aqua and blue with white color. The item is marked “medium 10 1/2 - 12 1/2” but **please note** the measurements below. To me, this fits more like a modern day XS. Super cute! Laying flat: 12.75” shoulder to shoulder 15” armpit to armpit 18.5” shoulder to bottom Happy to provide any additional measurements.