We have four different sizes of badges available. The sizes are 25mm, 38mm, 45mm, and 58mm. We also have a different style of badges. You can have a pinned badge, a mirrored badge or you can have a key ring badge. You can personalise your badge with any logo, message or design. It certainly could be nice for a giveaway at a conference or you can get them for a club your child might be involved in. Info such as a website or phone number could be put on the badge.