Perfect for passenger seats. No sliding. I am very happy.
This dog car seat is not as sturdy as I thought it would be.
We put it in the back seat of our small SUV. It stayed in place for the entirety of our 4 hour drive. Our dog was all over the car, so she needed to be secured in her own space for her safety and ours. She weighed 24 pounds and could see out the window while hanging on the car seat. We pulled back the part of the seat facing the middle of the car so she had plenty of room to lie down.
I'm very happy with my purchase, even though it was very expensive!
Dog Car Seat Bed - First Class