The WACKYwalk'r is the solution for dogs that pull. Made from 100% natural rubber tubing and nylon, our patented technology absorbs all the stress and shock rather than your arms and back. It's easier on the dogs neck back and spine as well. Available in 3 sizes for dogs from 10 to 200 pounds. Different diameter tubing offers different levels of resistance. The WACKYwalk'r provides a constant gentle correction which trains your dog to stop pulling. All leashes are reinforced with a safety line to limit the stretch. At the lower portion of the leash is a secondary "traffic" handle for complete control. The lower handle also works as a seatbelt restraint in your car. The WACKYwalk'r offers a more enjoyable walk for those at BOTH ends of the leash. "We Won't Jerk Your chain!"