Wash fabric car seat covers in cold water. If you wash them in hot water the elastic or fabric could shrink. For the same reason, never put car seat covers in the dryer. Always hang them up to air-dry. Adjust the cover. Every time you get out of the car, take a moment to adjust the seat cover back to its correct position. We’ve identified the EDEALYN Driver and Passenger Seat Cover as the best car seat cover overall. Made with high-quality, heavy-duty leatherette, these seat covers are ultra-durable without sacrificing comfort. These features, coupled with the fact that it is super easy to install and offers great protection against dirt and spills, make it an excellent choice for smart buyers. We are in San Antonio and the weather has already been in the 90’s off and on for awhile now. DS #2 is rear facing (9 months old) . We switched him over to his convertible car seat a couple months ago when it started to get hot. He is a sweaty baby and he seemed miserable in the infant car seat because it was more snug and confining.