I love these foam booster seats, but more importantly, my fur babies love them. I already had a smaller one for my 3 year old, but once the new pup arrived, I knew that I wanted a larger one. They are easy to attach to the car seats, and the tether works great until my curious pup falls asleep. My older booster is a different brand, but it’s basically the same thing. Also, it’s nice to be able to unzip the cover and throw it in the washer after a long car ride.