Under extreme force or cold air, acetate and plastic buckles typically used to manufacture dog collars can break or malfunction. BigDogBoutique creates stylish but classic collars which fasten with an all-metal side release buckle. This creates a superior collar that offers the ultimate in safety. We also offer a buckle-on martingale collar with an all-metal buckle. The Cadillac of dog collars- it assures your dog will stay safe in any situation. All patterns show below- and many more- are avaliable with a metal buckle or as a metal buckle-on martingale.