Rear facing is great but vehicle seats do get dirty when there is snow, rain, and mud outside. This seat protector from Axkid will protect your vehicle seats from your toddler:-)
We use the seat protector from Axkid instead of Britax or Brio for a few reasons. It's made out of the same material but is a slightly longer and will better protect your vehicle seat. It also has two pockets where small baby items can be stored. Last but not least it has holes for Isofix installation which are covered with velcro when not used.
The cover is easily installed and can of course be washed.