Abstract: An insert for a child or infant car seat has at least a back portion, a seat portion and a leg portion. A child or infant can sit on the seat portion while his or her feet and legs will be supported by the leg portion. Use of the insert will prevent circulation in the child or infant's feet and legs from being cut off and can therefore extend the amount of time the car seat is continuously used. The inset will also increase the child or infant's comfort and will act as a protector for both the car seat and the seat of the vehicle. The portions of the insert can be a single, rigid, one-piece body or the back portion can be pivotal relative to the seat portion. The insert can include a detachable cover for the back and seat portions alone or for the back, seat and leg portions of the body. A cushion can be provided on the cover behind the leg portion of the body. This cushion will act as a support for the insert. Instead of a cushion, rigid side portions can be provided on the leg portions to act as a support.