Using this dog collar is easy. First, measure your dog's neck accurately and follow the sizing instructions to pick the right collar size. Put the collar around your dog's neck and fasten it through one of the holes. Make sure it's not too tight or too loose. When it comes to maintenance, keep the collar away from excessive moisture. If it gets dirty, you can gently wipe it with a damp cloth and let it dry naturally. Avoid leaving the collar in direct sunlight for long periods as it may fade the color. Always check the collar regularly for any signs of wear and tear, and replace it if needed to keep your dog safe.