New Match and Well Made --- Breathable Mesh Chest Vest Harness Strap: its made of the double mesh fabric with the flannelette edge, attached to four PP material strap, which will absorb sweat and feel breathable when your pet dog wear it. Elastic Safety Seat Belt: its made from durable nylon strap to protect the dog which is elastic and adjustable for the car vehicle. Suitable and Humanized Design --- Breathable mesh chest vest harness would relieve the pressure. It is adjustable depending on how much lead way you need to plug into your cars seatbelt it fit perfect definitely.The included seat belt was long enough to let him move in the back seat and lay down. Keeping Safe and Comfortable --- The harness wraps around dogs body and neck which could be instead of a collar. The straps tighten up securely so dogs cannot roam the car to prevent dogs from hopping into the front seat, but they don't pull against them. Easy to Use and Quick Release --- There are four buttons on the harness strap can be easily adjusted to make your dog pals feel comfortable, which is suitable for small, medium dogs or even kitten cats and medium cats. The seat belt can be adjusted from 20.87 inch to 29.13 inch. Easy to hook up both in the car and trunk. Wide and Further Application --- The harness can be used as a travel harness in the car to prevent dogs jumping out the window when go driving around. It also can be use a regular harness connects with the retractable dog leash as a regular harness.