Introduce your little diner to family mealtimes with the GracoÂ® DuoDinerâ„¢ 3-in-1 highchair. The highchair that grows with your child from infant to toddler and converts to a space saving booster. It has a 6-position height adjustment that helps you position baby at the family table. Its 3-position, one-hand adjustable reclining seat and infant head and body support help ensure babyâ€™s every meal is a comfortable one. And its the highchair frame is designed to easily stow away when youâ€™..