Pet Leashes NO PULL NO CHOKE: 2 sturdy metal leash attachment points with reinforced webbing, front clip for discouraging pulling and back for relaxed walks. Ergonomic design, pulling pressure is evenly distributed to the body to prevent Choking. EASY TO PUT ON: Its super easy to put on, just simply slip it over the head and then snap both sides into place behind each leg!NO need to step into it. SUPER SAFE: Its super reflective for night walks.If dogs get loose, a car would be able to see them with the reflective features. It is also great when you walk a lot at night near busy intersections and downtown as car lights reflect off the harness. EASILY ADJUSTABLE There are 4-way adjustable straps,providing a snug fit but wont interfere with dogs mobility. Also, It will grow with your puppy. STURDY DURABLE: Scratch-Resistant oxford material outer layer is super easy to clean. Quick-dry and soft breathable non-toxic mesh padded, keep optimal comfort while exercising. How to choose the size First please measure the dogs Chest , this is the most important Second, please measure the dogs neck circumference Please measure your dogs chest circumference at the same location as the line shown in picture.