Using the Coastal Single - Ply Dog Collar is very simple. Just put the collar around your dog's neck and fasten the metal tongue buckle through one of the four holes until it fits snugly. Then you can attach your dog's ID tag and leash to the D - ring. When it comes to maintenance, it's a good idea to clean the collar regularly with mild soap and water. Avoid using harsh chemicals as they might damage the nylon material. Also, check the buckle and D - ring periodically to make sure they're in good condition. Remember to choose the right size for your dog to ensure maximum comfort. If the collar is too tight, it can be uncomfortable for your dog; if it's too loose, it might fall off.