Joovy Ergo Seat Covers - Purpleness The Ergo Caboose Deluxe Seat Covers enhance the comfort of your children and create a totally different look for the stroller. The package includes a front seat cover and rear bench seat cover. Each is durable and made from washable 600D fabric with heavy duty padding and support. They are easy to install and integrate with the harnesses that come with the stroller. They will also help keep your children warmer in the colder months of fall and winter.