Pros: Nothing really as i didn't end up using them
Cons: They feel insanely cheap. I can't even describe how terribly made these look and feel. The fastening system is pretty bad. 2 small little [thinner than shoe laces] strings to go around the base of the seat. In fact they wouldn't go around The top fastening system wasn't AS BAD, but was still fairly lame. Two thing weak Velcro pieces.
I wanted to like these as i LOVE, LOVE, LOVE their car seats. I went with the Prince Lionheart seat protectors.