1Made of high quality nylon material, firm and durable, provide longer service life. 2The lightweight clasp has a large carrying capacity, which greatly improves the tensile strength. 3Use the top handle when walking, running, or jogging. On busy sidewalks, use the bottom handle, easily control your pet. 4It relieves the stress of exercise, and the feeling of the pet being pulled, more comfortable to use. 5Can overcome the huge pull, and fasten the car seat belt, can ensure the safety of the dog in the vehicle while driving. 6Fit for medium size dogs, and some of the large size dog, with three different size to choose, meet your different needs.