Pinback Buttons are great small accessories to decorate your favorite backpack or dress up those cute overalls you just love. These cute small pinback buttons make for great gifts for those awesome button collecting friends. Size All pinback buttons are 1 inch (25mm) round. I currently do not offer a larger size. Maybe in the future. Instructions Please note that these pinback buttons do have a sharp pin and you are to be advised to be careful when placing your pinback button. It is best to put your pinback button on your clothing prior to putting on the article of clothing on yourself to reduce the risk of stabbing yourself.