Something I learned at the soccer field...

If someone puts three open, half full, Capri Suns in the car seat that is attached to a stroller the car seat will be drenched and sticky when the Mommy tries to load up to go home and no one will admit to the wrong doing.  A t-shirt, a burp cloth, and a nursing cover do not have enough soaking power to protect baby....but a soccer jersey will keep the dampness away long enough to get back home.