ADJUSTABLE - The size of the dog collar can be adjusted with the buckle, allowing for easy and convenient sizing based on the dog's neck. Available in three sizes: M, L, and XL, it perfectly fits medium to extra-large pups. EXTRA CONTROL - This tactical dog collar, featuring a built-in handle, provides better control during training sessions, whether crossing the street, at high traffic events, veterinary visits, patrolling, or hunting. DURABILITY - The adjustable dog collar is crafted from high-quality 1000D nylon material, ensuring it is strong enough for your active pup. The perfect fit: M 14 - 19, L 18 - 23, XL 22 - 27. WIDELY USE - This pet collar is ideal for various activities such as dog training, patrolling, hiking, working, walking, running, and hunting. Suitable for medium and large dogs, including breeds like German Shepherds, Border Collies, and Rottweilers. Product Include: The Military Training Collar package contains 1 dog collar and 1 decorative patch. We offer 24-hour customer service; please feel free to reach out with any questions, and we will resolve them promptly.