The OXO Tot Sprout Chair is an extended use chair that grows with your child and its developmental stages, from six months to five years. The seat adjusts in height and depth and the footrest is height-adjustable. A depth-adjustable tray accommodates the baby as it grows and can be removed, so the chair can be pulled up to the table. The seat, back and cushions are contoured for comfort and promote “sitting up straight”. For children over age three, the crotch post, tray and harness can be removed to convert the high chair to a youth chair so that kids can sit comfortably at the family table. For added convenience, OXO Tot Sprout Chair requires no tools to assembly.