If you want a personalized badge keychain, you can choose from a variety of options. Many companies offer these keychains, and there are many different ways to customize them. Thin blue line state keychains are made of heavy-duty vinyl and measure about 2.7" tall. customized keychain of the keychain will vary depending on the state you choose. These chains are made in Des Moines, Iowa, and you will need to include the state and custom badge number in the "notes" section when ordering.