Homework, reading, drawing, eating or board games are no longer sedentary activities. The Kore Kids Wobble Chair has a gently rounded bottom to encourage active sitting and increases secondary focus. Great outlet for kids with high energy or sensory needs like ADHD or Autism. A patented anti-roll safety ring on the gently-rounded base prevents tip-overs and falls.. Also in black, grey, red, blue, orange. Antimicrobial protection. Lifetime warranty. Made in USA. Ages 8 - 9 years. Grades 3 ā€“ 4. Assembles easily in 3 easy steps and is made of durable, recyclable plastic. Child height 50ā€¯-53ā€¯ Check out the Kobe Wobble Chairs for all ages and sizes up to Adult. This chair is green.