✔ Set Of 2 Reflective Patches state Working Dog printed in bold white letters on a black, finely finished background for easy identification and added safety, to make your animal visible and safe at night or in low light. ✔ Velcro Hooked Backing provided for secure attachment on working dog vests, harnesses, and collars, with Velcro Looped backing. ✔ Built to Last of woven of waterproof, sturdy, durable polyester material, for maximum life of the patches ✔ Interchangeable, Removable Patches can be used for multiple dogs or a dog with numerous roles. Unlike embroidered patches, there are no threads to snag and break or print that simply rubs off. Harness and Vest should have Velcro looped (fuzzy) piece already attached for this patch to work correctly. Set of 2 Working Animal Reflective & Removable Hooked Backing Patches for XS, S, M, L, XL, and XXL size Animal Vests and Harnesses. Why should you buy our patches? Our Working Dog Patches allow you to change the identification of your Service Dog Vest or Harness in just a few minutes. Featuring large, reflective lettering that is recognizable even from a distance. If your Working Dog has multiple jobs the interchangeable patches help indicate its function or status at any time. Working animal vests ensure that the public sees your companion as a working dog and not a family pet. Be sure to measure the velcro area on your vest or harness to select the best fit as some brands are slightly different in size. Just 4 Paws Working Dog Patches are available is 9 styles, "In Training", "Do Not Pet", "Service Dog", " Service Dog in Training", "Therapy Dog", "Best Friend", "K-9", "Adopt Me" or " Emotional Support"