New Match and Well Made — Breathable Mesh Chest Vest Harness Strap: it’s 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: it’s 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.