It grows with your child from 22 to 100lbs. The Side Impact Protection gives you peace of mind and the 3 position Quick Fit headrest makes correct adjustment of the harness without rethreading! For your little passenger either in the harness or belt positioning configuration they will get fully padded fold down armrests, adjustable belt guides,3 position seat recline and a slide out cup holder. Remember most states require children to be in a belt positioning booster up to 4' 9" tall or 57".