PetSafe Medium Black Gentle Leader Headcollar is a reliable accessory that keeps your furry friend safe and comfortable during your adventures. This innovative headcollar helps prevent uncomfortable pulling and leash tension by applying gentle pressure at the back of your dog's neck, ing a humane to traditional collars that can cause choking and discomfort. It is not a muzzle, allowing your dog to ly open its mouth to eat, drink, pant, play fetch, and even bark while wearing it. Designed for dogs 8 weeks and older, it can be worn comfortably for extended periods, up to 18 hours a day. The product comes with user-friendly instructions, a comprehensive training guide, and an informative training DVD, making it easier than ever to help your dog become a better walker. Model Number: