Cesar Millan Blue Dog Collar for Large Dogs, Pack Leader Dog Collar with Harness and Non-Slip Lead, Dog Accessories Designed to Train Dogs Not to Pull

Most collars rest on the strongest part of a dog's neck, giving them the leverage they need to take full control of the walk, and of you, too. The Pack Leader Collar is different. It keeps the slip collar at the top of your dog's neck so you can more effectively control and correct your dog during walks. Simply attach to a short leash (we recommend 36 to 48", or 91 to 122 cm), pay close attention to your energy, and give quick, firm corrections when necessary. To determine the proper collar size, measure the circumference of the throat at the base of the neck. Small 13" - 15" (33 - 38 cm) or for dogs weighing 20-40lbs Medium 16" - 19" (40.5 - 48.25 cm) or for dogs weighing 40-75lbs Large 20" - 23" (51 - 58.5 cm) or for dogs weighing over 75lbs Please note that this collar will not be suitable for dogs with short necks, such as pugs or bulldogs, or with long necks, such as Greyhounds. Please also note that this collar is designed to have your dog walk on your left side. Directions on how to fit on your dog will be included with the collar.