It comes from Gitman Brothers Vintage (who have been killing it on the S/S/B/D front), with a secret weapon: seersucker. You might not notice without the telltale stripes, but it’s made from the same piped fabric as the more traditional version, and it’ll wear just as cool. The fit here’s close to perfect too, particularly the shoulder seam. Once things heat up, it’ll be a safer bet than your tee-shirt.
You have our permission to untuck.