Keep your dog close on all of your outings with our Biothane Adjustable Martingale Collar with Metal Buckle. This long-lasting collar features a durable polyester webbing and a waterproof coating, allowing you and your pup to enjoy laps in the pool or walks in the rain. Plus, the Herm Sprenger assembly chain is ideal for training. Simply adjust the size to fit your dog’s needs and off you go.