K9, service dog, working dog, military dog, tactical dog, or gurad dog. This collar is made of high quality and durable nylon material with neat stitching and soft padded lining to prevent chafing for your dog's skin and hair with a comfortable fit heavy-duty dog collar. 5 Adjustable Points: double pin buckle design, convenient for you to adjust the tactical dog collar length as desired. D-Ring and magic sticker ID panel: heavy-duty metal D ring & metal buckle for good durability; Easy to attach dog leash. One hook & loop panel for you to add military patches for extra swag. 2 Color Choices: Military Green or Camouflage Beige Adjustable Dog collar fit for medium to large dogs. Available in 3 sizes all at 1.5inches wide Size M: Length of Neck (15.35''-19.29''/39-49cm); Size L: Length of Neck(18.9''-22.83''/48-58cm); Size XL: Length of Neck (22.05''-25.98''/56-66cm). Please double check the measurement to reduce the probability of receiving unsuitable item or return. All collars include a free removable patch: American Flag