Stop being harassed by store owners every time you bring in your fellow service dog with you! These patches are a must to make your life as simple as possible, and it keeps you from explaining the same thing over and over hundreds of times a year, that your dog helps you, and you are within the law to bring him with you. Using an EzyDog Convert Harness also makes your life easier with your service dog, because the vest itself contains a soft pull handle for maximum control and dog manageability in stressful situations. 2 Pack.