The innovative Kore Design® 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. Suggested for ages 4-5, PK-K. Infused with Smart Plastic™, an anti-microbial agent that inhibits germs from growing on the stool's surface. Child height 40"-43". Provides an outlet for children with high energy or sensory seating needs like ADHD or Autism. Provides an outlet for children with high energy or sensory seating needs like ADHD or Autism. Homework, reading, drawing, eating or board games are no longer sedentary activities. A patented anti-tip safety ring on the gently-rounded base prevents tip-overs and falls. Recommended age 4-5 years