Set of 2 Service Dog Reflective "Do Not Pet" Velcro Patches. Velcro Makes It Easy to Change. For Dogline, DogStylze And Dean & Tyler Vests or any Vests With Velcro Loop Material. These Patches Have Velcro Hook Material On The Back. Reflective Material Helps Keep You And Your Dog Safe at Night. Unlike Embroidered Patches There are no Threads to Snag and Break. Printed Lettering is Easy To Clean. Comes in 2 Sizes - Small and Large. Small size is 1.5" inches high x 4" inches wide, Large size is 2" inches wide x 6" inches wide.