K9 Explorer Reflective Adjustable Dog Collar. Total length: 12'. Color: blue. Width: 1'. Adjustable sizing to fit necks 12' to 16.5'. The collar has many one-of-a-kind features, including a side-release buckle, movable D-ring and reflective stitching. Features a reflective stitching woven into luxurious nylon for night time safety. This collar is comfortable, appealing and durable. Perfect for everyday use.