The innovative Kore Design® Kids Adjustable Wobble Chair with it's gently-rounded bottom encourages active sitting and allows one's knees, hips and back to find comfortable and ever-changing positions; continuous movement increases Secondary Focus. Great for older children and young teens, the seating height can be easily adjusted from 14" to 19" with the 360° Actuator Ring to grow with your child. Suggested for ages 9-14; Grade 4-9; child height 53"-70".