General description No More Pulling: experience hassle-free dog training with the martingale pet training collar, your perfect solution for less pull and more control - tightening under tension but only enough to give a gentle training cue. Recommended by Trainers: Unlike traditional choke collars that use uncontrolled force, the martingale-style collar with chain allows you to gently control your dog on the leash. Built to Last: Engineered to last with a heavy-duty stainless steel chain that won’t discolor, weather-proof nylon, and reinforced buckle. Ultimate Versatility: Our collar does it all! We designed this martingale-style collar with two D-rings which allow you to easily switch from a training collar to a standard (non-cinch) collar.