Reusable plastic collar stays keep shirt points crisp and prevent curling. Set includes multiple lengths to fit most dress shirts: 4 × 2 in (50.8 mm), 6 × 2.5 in (63.5 mm), and 4 × 3 in (76.2 mm). Slide into the stay pockets on the underside of the collar to maintain a polished look throughout the day—no tools required.