Enzo Anti-Escape Martingale Collar for Lebrel and Escapist Dogs If your dog is a hare or an escapist, or simply pulls a lot on walks, the Enzo Martingale Collar is the perfect choice to ensure their safety and control. This anti-escape and anti-pull dog collar is designed with a self-regulating part that closes when the dog tries to remove its head from the collar, preventing it from escaping. In addition, when the dog pulls, the collar adjusts to cause a feeling of suffocation that will cause it to slow down, reducing the effort we will have to make to control it. The Enzo Martingale Collar has a striking design made of high-strength polypropylene tape, covered with an eye-catching upholstery fabric with attractive and high-quality patterns, which adds a touch of style and personality to your pet on every walk.