Photo 1 of Mayerzon Dog Collar, Patented Martingale No Pull Collar for Small Medium Large Dogs with Buckle for Walking Training, Hidden Design (Black, Medium,2.5mm,20-Inch,14.5-18.5" Neck)

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Photo 1 of Mayerzon Dog Collar, Patented Martingale No Pull Collar for Small Medium Large Dogs with Buckle for Walking Training, Hidden Design (Black, Medium,2.5mm,20-Inch,14.5-18.5" Neck)Photo 2 of Mayerzon Dog Collar, Patented Martingale No Pull Collar for Small Medium Large Dogs with Buckle for Walking Training, Hidden Design (Black, Medium,2.5mm,20-Inch,14.5-18.5" Neck)