Abstract: A chair liner for highchairs, strollers, shopping carts, car seats or the like includes a back panel extending from a bottom edge to about head height of an infant, and two relatively thick arms projecting from the back panel to a front edge. The back panel preferably has a curved top edge and the arms gradually taper inwardly from the back panel to the front edge. The arms and the back panel are of a one-piece construction. The liner has a washable fabric covering held on by a zipper which is easily opened to allow removal of the cover. The cover is machine washable and easily reinstalled. The liner fits most standard chairs and booster seats, and it must be used with chair restraints.