Well Kia's seatbelt is designed that it doesn't make her sit up against the seat. She wears a harness and there is a strap that connects to the seatbelt and the harness. I can adjust the length of the strap to either keep her in sitting position or to give her more room. Kia is able to sit up, lay down, and walk a little around the backseat.

When I bought it the woman at the store said one customer was in a rollover accident and her dog lived. Police said the dog would of been thrown from the car had it not been secured.

Some weeks later after buying my seatbelt, I was rear ended and Kia was thrown forward but kept in the backseat and was okay.

The other great thing about it is that it doubles as a regular harness. Kia can't jump out of the car when I open the door. I clip her leash to the harness and then unclip the strap.