A long-sleeve bodysuit with a clean square neckline that sits straight across the collarbone, cut in smooth stretch jersey with no visible seams to sit invisibly under high-waist skirts and trousers. The square neckline is structured enough to hold its straight line rather than curving or stretching into a rounder shape through the day, which is what keeps it looking neat under blazers and structured tops. The fitted sleeves run the full length to the wrist for a base layer that works through colder months, and the snap closure at the base keeps everything anchored so the fit stays clean whether you're sitting, standing, or reaching.