When you go out in public, it is imperative that strangers understand that your service dog is working. Announce the presence of your service dog with the Mondo Medical Dog Working Collar. The service dog equipment collar features “SERVICE DOG” embroidered across it so other people in outdoor spaces can clearly see that your service dog is hard at work. With its 18-inch long adjustable collar, this medium dog collar for service animals will comfortably fit on your dog's neck. Attach your leash (not included) to the D-ring along the collar. Unlike vest harness designs, the service animal tag collar provides high visibility while keeping your service dog cool in the summer heat. Service animal collar measures approximately 1 inch wide. Use for medium-sized dogs. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.