Finally, the Adjustable Wooden High Chair That is Affordable! The Height Right Wood High Chair from Keekaroo grows with your child! From 6 months up to adult! If your toddler can comfortably sit upright and balance him or herself, expect them to be ready for a Height Right Wooden High Chair. As they grow, the Height Right Wood High Chair grows with them. Completely adjustable to each child's needs, the wooden highchair adjusts in height and depth of the seat and footplate. This allows every child the perfect seating position whether it's being used with the tray or pushed up to your table.