Function: perfect for nurse, doctor, university teacher, employees, students, attendees, referee and visitors, use to hold keys, some flash drives and all kinds of cards like name tags, work name badges, lanyards, visitor passes, bus cards, hotel keys, credit cards and more
Occasion: convenient to use for business, school, office, conference event or social events like kids field trip, trade show, concerts, cruises, outing, conventions, awards ceremonies, make a nice impression at these events with these black retractable badge