Vintage St. Marteen Blue Blazer Size M

This single button blue St. Marteen blazer, reads as solid blue from afar, but has subtle black and red vertical stripes.[3rd photo shows accurate colors & button], faux hip pockets, decorative black ribbon border on sleeve ends, easily removable shoulder pads if desired & a single gorgeous polished gold finish metal button w/an enamel look black center. 20" underarm to underarm, 29" back of neck to hem & 22" sleeve. Exceptional vintage condition-no stains or holes. The tag says Small but measurements say Medium.