Compared to riding inside a crate, lying on a car seat protector provides better comfort for your pooch since it has greater freedom of movement. (mypetneedsthat.com)
Babies are messy, so the waterproof seat protector keeps spills and leaks off of the car seat cover. (bestcarseathub.com)
Two other things I recommend to moms of little ones: The vehicle seat protector if you have leather seats and the waterproof mat if you are in potty training mode. (pinkandnavystripes.com)