Guardian Gear Paw Print Martingale Dog Collars work like a choke collar, but without the chain. Each has a playful paw print pattern in your choice of three colors. All-nylon collar will tighten when a dog pulls on a lead, then relaxes when the pulling stops. Prevents dogs from backing out of their collars. Great for breeds with large necks and small heads like greyhounds. Guardian Gear Paw Print Martingale Dog Collars are available in Black, Blue and Pink. Each includes a hangtag for easy retail display. All Guardian Gear Collars are guaranteed for life. Camo Style Martingale Collars are also available. See the Specifications and Sizing Info tabs for more product details.