No More Hassle Leashing Dog Vest - Dog Harness with Built-in Leash. Don\u2019t have to leash and unleash constantly when out-going for adventure explorer. Just free your hands with more funs and enjoy it, the leash will simply retract into the harness when off hands providing a more comfortable experience for your doggy.The webbing is not a self-retracting one for the sake of security, fearing that the rope will be bouncing back to people or dogs. You can slowly elongate the webbing, it will slowly automatically retract, if the rope is too long, please operated it several times. NOTE: Be careful when washing the harness or the auto-lock system will be broken. Freedom and No Pull - No need to hold the leash any more, let them go and play at beach or during a hike, while you can hold the leash when in crowd/traffic any time you need.With safety auto-stop system, it will automatically stop when your furry friends uddenly runs out. Ideal for Daily Use - Except for the retractable leash set our dog harness has also 2 sturdy metal leash rings for safer dog walks. Use the front clip to have full control that prevents pulling Easy Adjustment, Better Control, and Comfortable - 4 flexible sliders, 2 neck straps, and 2 chest straps to make it fit snugly. Lightweight, durable, made of Oxford fabric, and soft, breathable mesh that is comfortable when running, walking, or resting. Lots of reinforced double stitching at high-stress points for much durability. An extra top handle for additional control has been very helpful, too. It helps train and guide them to change directions when needed. Make Sure to Measure - No two dogs are the same. Please measure the size carefully before purchasing this present for your puppy. If your pooch is between sizes, go UP one size if they have a broad chest or shoulders, the reverse is also true. Also, don't forget to leave some space for your growing dog when choosing the size. The size guide is all measured manually. It is normal for the actual product to have a data error of 1-2CM. Note: Please feel free to contact us at any time needed.