The width of the reflective harness is 1 centimeter for a chest diameter between 39 and 46 centimeters.Suitable for an additional small dog ERGONOMICALLY DESIGNED TO BE ADAPTABLE AND ENSURE GOOD -BE: we have created a dog harness that is easy to put on, simple to use and offers your pet a comfortable fit. REFLECTIVE PROPERTIES: the reflective strip is made of polyester and cotton, and is designed to reflect ambient light in extremely low light conditions, providing maximum visibility when it’s needed most. Not suitable for chewing. Do not leave the dog unattended with the product. For your pet’s safety and comfort, we recommend that you measure it before purchasing the dog harness This dog harness is easy to wear and adjust. Adjustable chest and neck straps allow for a custom fit for your furry friend. Perfect for daily walking, running, jogging, hiking, training, outdoor fun Scope of delivery: pet harness*1 < p>Warm advice: Dear buyer, due to lighting effect, monitor’s brightness,