For the integrated booster seat there is both padded upholstery and pillow with built-in side supports that improve sitting comfort and keeps the child steadily in place. The upholstery is easy to install over the integrated booster cushion and is removed when not used. The side supports are easy to remove before washing thanks to a zipper. At the bottom, the upholstery is provided with a plastic vinyl dirt cover which protects the rear seat's original upholstery.