Cool Red US polo sweater

The “button up” is sewed into the sweater portion of the shirt, it is in a full button up. Super cool sporty vibes! The tag says medium, but I feel like it may be more aligned with a small. At a flat lay: Armpit to armpit: 16.5” Length: 23” Sleeves: 23” Shoulder to shoulder: 14” Pet/farm friendly home and clothes are washed in Gain original