After about a month of use, we had our first test last week - on a long car trip, our 3 year old got super sick, throwing up. Between the protector and her dress, all of it was caught - nothing on the car seat. Second test was a few days later. She fell asleep in the car seat, and when she woke up, "my dress is wet." Uh oh.... but we pulled over, and again, all the wet was either on her dress or the protector. Horray! I think this product saved me 4 hours of cleaning on one car trip to Nana's and back. Definitely recommend. Downside: sometimes it gets pushed down when she sits and you have to adjust it to make sure it isn't crinkled up behind her.