Using the Adjustable Kwik Klip Dog Collar is easy. First, measure your dog's neck and add two inches to get the right size. Then, adjust the collar to fit your dog comfortably. Fasten it securely with the high - impact plastic buckle. When it comes to maintenance, you can wash the nylon part with mild soap and water, then let it air dry. Keep in mind that the sizing slide material might vary depending on the size and color. Also, regularly check the buckle to ensure it's working properly and the collar isn't too tight or too loose on your dog.