Petjoy's Hanging Heart Engraved Therapy Dog Tag is made from our Tuff-Tec Plastic which makes it resistant to scratches from your dog's daily activity. This tag reads "My duty is to serve those in need. I am a... THERAPY DOG" in bold white letters. The Hanging Heart Therapy Dog Tag measures 1.7" x 3.5" so it is very easy to read, yet not cumbersome on your service dog. It is a great addition to hang on our Vests and Harnesses, on a collar, or even on a carrier.