The tag itself measures 1.25″ x 2″ (not including the key ring). It is made from a light-weight aluminum but is very sturdy! The picture is permanently pressed onto the keychain so it will not fade or tarnish.
These keychains work best with rectangular photos where there is extra space at the top for the keychain hole. If the picture you send me does not have extra space at the top, I will leave some blank space at the top for the keychain hole. If the picture is square, I may have to adjust/rearrange the photo so that it fits, but there may also be blank space above and below the picture.