Our Pet Car Seat now comes with THE WEDGE which provides a great ride for the pampered pet while the car seat stay level. The design of the seat elevates your pet to provide a clear view of the road. Sturdy foam frame with a 2 inch piece of solid memory foam for extra comfort and includes a safety tether. Installs securely in less than one minute utilizing your vehicles’ seat belt system. Zips off for easy washing. Made in the USA. Small, (inside measurement) 14 Inch wide x 12 Inch wide x 5 Inch high (outside measurement) 18 Inch wide x 16 Inch deep x 15 inch high.