FYI = these are lapel pins. Hat pins are typically 4-6" long and date back to Victorian times. You can of course wear these on a hat or anywhere else you desire!
Diepenbr FYI-these are also called Hat Pins because they were originally made to put on your cap or hats.There are Lapel pins too but they have a different backing and are more expensive,Yes there is alo pins used for only Hats,called Hat pins that you are talking about so you are right and wrong too!!!