My wife's 6-pound Yorkipoo can't decide which she hates more - to be left at home, or to ride in the car. She is always scared in the car but hates being left behind. We were thinking this might help her feel more secure, but she was still scared and cried until we took her out. It was kind of hard to attach it to the seat and we could get it to not tilt back, maybe we were doing something wrong though. I still think it's a good idea if you have a little pup, to keep them safe and secure in the car.