Our Cuscus Pet Seat Carrier dually functions as both a pet carrying bag and a car seat. The interior tether is adjustable to keep your pet secure. while loops at the back allow the seat belt to pass through and add extra security. Adjustable strap attaches to the headrest in your car, but also acts as a shoulder strap when carrying your dog. Handles are available for carrying as well. Mesh top entry and side windows ensure air ventilation. Front and side pockets also hold treats, toys, etc.