Collar inserts, also known as collar stays or collar stiffeners, are small, flat pieces of metal or plastic that are inserted into the pockets on the underside of a dress shirt. They help keep your shirt looking crisp and professional.

Magnetic collar stays were invented to create a hidden-button-down shirt collar, ensuring that your collar stays in place all day long, no matter how you position your shirt collar. With magnetic collar stays, you can even do a handstand! On the other hand, non-magnetic collar stays simply offer support for the collar and do not hold the collar in place.

Yes, there are plenty of informal names for collar stays such as: collar bones, collar tabs, and collar stiffeners. They are all just different ways to specify an insert to help keep your shirt collar stiff.

Yes, collar stays or inserts are perfect for dress shirts or business shirts. They do a fantastic job of shaping and straightening both business and casual shirts. Collar stays or inserts help protect your dress shirts from the dreaded floppy collar.