Vintage polyester sports jacket

Vintage navy blue with red and white stripes polyester sports jacket. Two outer pockets and one inner pocket. Looks like this could’ve been attached to something else, but I don’t have it. I don’t know exactly what size this is, so below are the measurements. I’m estimating it to be a small/medium. Measurements: Shoulder to shoulder: 17.5 inches Pit to pit: 20 inches Length: 22.5 inches Material: 100% polyester Questions? Leave a comment below!