Cesar Millan Pack Leader Collar, Invented Designed Dog Collar, Harness Combination - Secures Proper Placement Slip Lead- Stops Dogs from Pulling Gently Lifts The Nose ENSURES SECURE POSITIONING: Our medium dog collar has a unique design that is perfect for training your dog to be obedient and safe while on walks. The dual neck collar design of this great dog accessory is recommended for all dogs. The conceptualized design was developed by Cesar Millan to aid dog owners of all ages and dog training skill levels to handle their pets with confidence and ease. AS SEEN ON TV SHOW CESAR 911: Cesar Millan, a renowned dog behavior authority, stands behind the use of his effective dog accessories for medium dogs. He works with a large number of hard-to-handle dogs and befuddled owners on his show, and this collar has been used on the show on many occasions.This lead-collar combo has been a great help for many and is sure to work for your dog as well. UNIQUE DESIGN: This medium dog lead harness/collar combo is designed to keep the collar at the top of the neck, which is the most sensitive part of the neck, meaning your dog will be receptive to what you want them to do. Additionally, the neck harness feature is fitted near the shoulders, around the base of the neck area, which helps deter your dog from pulling and restricting their airway. DESIGNED FOR SAFETY AND COMFORT: Here at Cesar Millan, the safety of you and your dog is very important to us. So, the pack leader dog collar and neoprene harness are equipped with reflective trim to provide greater visibility during your early-morning and late-night walks. The ballistic nylon, neoprene, and breathable mesh construction make this dog collar one of the best in the industry. CONVENIENT SIZE FOR MEDIUM DOGS: It is imperative that you make sure to measure the circumference of your dogs neck to ensure a safe and comfortable fit. This collar is perfect for medium dogs, especially those with respiratory problems. However, this dog harness becomes less effective if it does not fit properly, For the right size, measure the circumference of the throat at the base of the neck.