WHAT ARE DOG PRONG COLLARS FOR?Hierarchical structure of relationships is very important for dogs. They obey only the leader and define him at once. In the order to make a dog understand your leading position one should use doggy language for training and behavior correction. In the nature alpha-dog communicates by growl, body language and touches.Prong dog collars do not resolve the problems of dog behavior itself, automatically. Without a definite knowledge and proper use it even may do harm for a dog mentally and physically. That's why consult a specialist before purchasing a prong dog collar.HOW TO PUT ON DOG PRONG COLLAR?It is important: prong dog collars are not taken on a dog through its head! It may injure dog's eyes. Unfasten one of links (or a buckle), take it on a dog's neck and fasten it.Look at the picture to see how to wear a prong dog collar. It is important that it should not be loose. Prong dog collar is disposed right below the dog jaws.HOW TO CHANGE SIZES?You can add or subtract links from a pinch collar to change sizes. A pinch collar should fit semi snug on your dog. If a pinch collar is fitted too loose it will not give an effective correction.BUY WITH GUARANTEEWe offer 12 Months Warranty and 60 Days Money Back Guarantee. If you are not satisfied with our product, we are happy to take returns on products that are in like-new condition. Just buy with confidence!