PERFECT FOR TRAINING - The slip lead tightens when your dog pulls and loosens when the behavior is corrected. This half-choke collar easily prevents your dog from pulling without causing harm. It's also great for walks, jogging, training, crate transfers, and potty training. EASY TO USE - This slip lead is convenient as it can be used without a collar or harness. Adjustable to fit any dog's neck size by adjusting the leather stop. Simply slip the loop over your dog's head and you're ready to go. HIGHLY REFLECTIVE - Reflective threads are woven throughout the lead to ensure you and your dog are safe and visible during late-night walks. DURABLE LEAD - Made from heavy-duty mountaineering rope, the braided polyester material provides maximum durability, withstanding even the strongest pulls. Constructed with high-quality metal O-rings and leather for extra durability. PERFECT SIZE - The 5-foot lead is the perfect length to keep your dog safely under your control while still allowing plenty of freedom between you and your dog. Available in two sizes, 3/8 inch (9 mm) for puppies and small breeds.