Using the All - Weather Adjustable Ultrasport Dog Collar is easy. First, measure your dog's neck and add 2' to get the right size. Then, adjust the collar to fit your dog comfortably. Attach your dog's leash to the metal D ring. When your dog gets dirty, simply clean the collar with water as it's waterproof and easy to clean. To keep it in good condition, avoid exposing it to sharp objects that could damage the Biothane material. Check the collar regularly for any signs of wear and tear, especially the adjustable part and the D ring. If you notice any issues, it might be time to replace the collar.