Simba stays safe while riding with me in the car now. Before I purchased this dog car seat, he would try to sit in my lap and go back and forth between the passenger seat. It was distracting for me as a driver. This dog car seat has a leash on each side, and I attach one to his harness. It is long enough so he can move around within his car seat, but not long enough where he can get out of his car seat. It's probably 10 inches long. I put one of the side handles over the headrest. I like that it is cushioned on all 4 sides, with 2 sides taller. Also, with a zipper in each corner, we can open it up to be used as his bed when we travel in the RV. It comes with a seat-belt strap to secure it better. This was not in the box when carseat was delivered, so I emailed the company and they were so kind to send me the straps and also some Korean snacks and candy! They emailed after it was shipped, which took longer due to coronavirus. Simba now rides either curled up in it, or with his head and paws on one side of the cushion watching me drive!! It seems expensive, but it is quality materials and worth it. The fabric reminds me of water repellant sunbrella. You will need to insert the cushions when you receive it, but just take your time and they will squeeze in! It is nice and cushy, so i feel Simba is better protected if there is a car accident.