Allow students to expend energy as they sit and work in class with Kore Design's Kore Wobble Chair. Unlike therapy balls, this Wobble Chair stays in place when you stand and resists tipping over. The durable molded plastic chair rocks 360 degrees, including from side to side and front to back. Choose from several vibrant colors. The chair helps strengthen core muscles and encourages proper posture. A great choice for students with ADD and ADHD. Choose from three sizes.