●With the adjustable snap and you can be adjusted freely. ●It tightens when your dog pulls, and loosens when he complies with your correction. ●Made of high-quality nylon materials to the high standard, great for walking, hiking and training. ●It is able to take a lot of weight and perfectly handles medium and large sized dogs of any breed. ●It can use less power to control the dog in a short time,It will always keep the leash satisfied with your dogs needs.