The frame of the seat has two metal rods on each side which help the seat stay solid and upright. The pet car seat is made of durable and breathable mesh fabric to keep your pet dry and comfortable. Adjustable buckle design, quick and easy to adjust, and install for a different car. Safety strap and seat belt buckle design effectively prevent pet motion sickness. Portable and easy to store. The cushion contains extension belts that attaches to the car seat head rest to securely keep your furry loved one in place.