KONG Reflective Paracord Collar 2015 Model! (Medium, Red) KONG Reflective Paracord Collar! Comfort fit for daily walks. Fully reflective lining as well! Size- Medium: 1.2" Wide & Adjustable between 16"-20". Large: 1.5" Wide & Adjustable between 22"-30" will fit any large breed. Please measure for best results. Specially packaged by Knockout Pet Supplies, we cannot guarantee the authenticity of this item sold by any other sellers.