There are two torso sizes to choose from (all in inches). 4 years: 25" bust, 23" waist and 25 hips. 8 years: 26.5" bust, 24" waist and 27 hips.Please note: the pedal on this base is for display purposes only and is not used to adjust the height on this form. The height of the form is adjusted via the telescoping poles. This item is made of natural canvas and metal, wood.