Ata-Boy Harry Potter Ravenclaw CreKeyring Keychain officially licensed. Show your style - and your undying fandom - with these officially licensed accessories brought to you by Ata-Boy! One of the easiest - and most fun - ways to show your style is by ironing a colorful patch or popping an enamel pin onto anything that needs a little perking up! Add some "flair" to your backpack, computer bag, hoodie or jeans to give them a look all your own. The thick, high quality full color embroidery patch measures approximately 3" high/wide while the artfully crafted, full color enamel pin measures approximately 1" high/wide.