Adjustable high chair step highchair tripp trapp chairs intelligent ergonomic design allows freedom of movement and encourages play and independence series stokke tripp trapp material beech recommended age 6 special features adjustable height expandable to suit growth of baby ergonomic seat adjustable table none max user height 128 cm footrest adjustable features without food tray footrest without footrest assembled dimensions 465 x 775 x 47 cm