Breathable chest vest harness and straps are made of double mesh fabric with a flannelette edge to absorb moisture, making the harness breathable and comfortable for your dog. The attachable safety seat belt is made from durable and adjustable nylon straps to help protect your pet. Highly adjustable and fits a wide variety of vehicle seats in seconds. The kit’s seat belt length allows your dog to move in the back seat and lay down. There are two buckles on the chest straps making the harness easy to put on -- no need for your dogs to “step in”. The harness straps can be easily adjusted for maximum comfort too, making this product suitable for small, medium and large size dogs. Seat belt straps are also adjustable and easy to attach.