The T-Shirt is 1 3/8" which is the perfect size for all pets. All tags include a keychain style split ring, that way you don't have to worry about the tag coming off and being lost. Your pets name will go on the front side of the tag in the font stlye you request. On the images are our most popular fonts; just tell us which one you like. The contact information is put on the back side in an very basic font so that it is easy to read. We include all engraving in the price so you don't have to worry about how much each letter or line will cost; it's all included. Just remember that the more information that is on the tag the smaller the text will be. After placing the order please fill out the order form with the color of the tag you would like and the information that you want on the tag.